//Hira-Zōgan
  • Iron tsuba of round form (width > height) decorated with a squirrel (on the face) and bamboo (on the reverse) motif in sahari flat inlay (hira-zōgan). Signed: Hazama (間) Size: 75.1mm x 75.9mm, thickness of seppa-dai 5.4mm. Early 18th century, mid Edo. Haynes/Torigoye: "There is another name for Hazama tsuba: the Kameyama school. In the period from Hōei to Kyōhō (1704-36) at Kameyama, in the province of Ise, the Kunitomo family made this style of tsuba" [...] The two artists who are best known for the sahari style of inlaid tsuba are Sadahide and Masahide" [...] The signature Hazama should be considered as that of Masahide". Sahari inlay is the distinctive characteristics of Hazama school. Sahari is an alloy of copper, tin, lead, zinc and silver. Hazama tsuba was carved patterns at first, then poured heated into the carvings on iron ground. Because it is an alloy, sahari shows different colors in each tsuba. According to Merrily Baird [Symbols, p. 163], "squirrels (risu) ... have no symbolic importance". NBTHK certificate №448388.

       
  • Iron tsuba of round form pierced (sukashi) and inlaid in flat (hira-zōgan) and cast brass (suemon-zōgan), details carved in kebori, with design of two phoenixes, bamboo, and paulownia leaves and flowers (kiri-mon) on both sides. According to seller: Bizen-Yoshirō school (or Heianjō school). Unsigned.

    Momoyama period. End of the 16th - beginning of the 17th century. Dimensions: Diameter: 99.5 mm; Thickness: 2.1 mm at centre; 4.3 mm at the rim. According to Merrily Baird (Symbols of Japan), "bamboo teamed with paulownia blossoms or with paulownia and the phoenix, in reference to the Chinese legend that the phoenix perches only on the paulownia and eats only the bamboo". Citation from http://www.clevelandart.org/art/1986.2.1: "The immense heraldic birds on display [...] reflect the Momoyama era's spirit of newly gained self-confidence and an affinity for grand expressive statements in painting, architecture, the textile and ceramic arts, as well as garden design. While that period preceded the arrival of prosperity, it clearly marked an extraordinary moment in Japanese cultural history, one frequently compared with the twelfth century of the Heian period.  [...] Rather than an emblem of immortality, as it is in Western lore, in Japan, the phoenix evolved out of its origins in Chinese mythology to become, by the sixteenth century, an auspicious symbol of political authority. Together with clusters of the distinctively shaped paulownia leaves, this long-tailed, mythical bird  [...] proclaiming an air of graceful command".  
  • Iron tsuba of 8-lobed form pierced with six openings (sukashi) and decorated with design of bamboo and arabesque in flat brass inlay (hira-zōgan). Two of the openings serve as hitsu-ana. The design on the face represents bamboo trunks and leaves, clouds, waves, and vines; on the back - vines and leaves, that forms an arabesque (karakusa) motif. Rounded square rim. 'Silver' patina. Hitsu-ana with copper sekigane. Heianjō (most probable) or Kaga-Yoshirō school. Late Muromachi or Momoyama period; 16th century. Size: Height: 74.6 mm; Width: 69.5 mm; Thickness at seppa-dai: 4.2 mm. Weight: 113.9 g. Provenance: Gary D. Murtha. This tsuba is illustrated at: Japanese sword guards. Onin - Heianjo - Yoshiro by Gary D. Murtha [GDM Publications, 2016, p. 48]: "Iron, 80x75x3 mm tsuba with brass karakusa vines and leaves on one side with bamboo, leaves, and clouds on the reverse. This tsuba is one of those pieces that might be classified as Onin or Heianjo work, but the flush inlay tips it to the Heianjo side. Late Muromachi period." I would like to add that it easily may also be classified as Kaga-Yoshirō. Robert Haynes in Study Collection.., page 32, illustrates a look-a-like example, and writes: "This style of inlay, where the designs on the face and the back are very different, was common to the work of artists in Kyoto in the Momoyama period."
  • Small iron tsuba (tantō size) of aoi form with the design of paulownia leaves and blossoms in copper and brass flat inlay (hira-zōgan). Brass sekigane. Open kozuka hitsu-ana.

    Early Edo period, 17th century.

    Size: 53.4 x 40.7 x 4.4 mm; weight: 47.4 g

  • Kozuka with seven insects (fly, grasshopper, bee, butterfly, dragonfly, firefly, and cricket) and grass with dewdrops motif. Shakudō, flush gold inlay (hira-zōgan). 95.2 (H) x 13.7 mm (W). Mid Edo period (Late 17th - early 18th century, Genroku era 1688-1703). Unsigned. Kaga school. A look-a-like kozuka (with five insects) is illustrated at Japanese Sword Fittings. A descriptive catalogue of the Collection of G.H. Naunton, Esq., completed and illustrated by Henri L. Joly, - 1912 on plate XXIX, №691 [LIB-1389 in this Collection] with the following description at page 54: "Shakudō, inlaid with butterfly, dragon-fly, grasshopper, locust and another insect, gold." See also tsuba TSU-0211 in this collection:    
  • Small iron tsuba (tantō size) of oval form carved with imitation of six overlapping plates, decorated with paulownia blossoms, leaves, and tendrils in brass and copper hira-zōgan. Copper sekigane. Open kozuka hitsu-ana.

    Early Edo period, 17th century.

    Size: 50.5 x 34.0 x 4.9 mm.

  • Well-forged iron plate of round shape (maru-gata) is decorated with water weeds or arabesque (karakusa) in flat brass inlay (hira-zōgan) all over and eight family crests (mon) of round form in cast brass with delicate linear carving (kebori) and openwork (sukashi). Crests represent: [at 9 hours] three counter-clockwise commas or swirls (tomoe); [at 10:30] plum blossom (ume); [at 12:00, 1:130, and 7:30] - stylized flower made by cutting out five suhama symblos (flower-shaped suhama); [at 3:00] bellflower (kikyō); [at 4:30] seven-star crest (shichiyō-mon); [at 6:00] cherry blossom (sakura). Brass-trimmed ryo-hitsu. Copper sekigane. Yoshirō school. Momoyama or early Edo period, end of the 16th to first half of the 17th century (1574-1650). Inscription on seppa-dai: 八幡 - Hachiman. Size: height 89.6 mm, width 89.3 mm, thickness at seppa-dai 3,0 mm. Weight 129.7 g. NBTHK certificate № 4007685, June 27, 2015: HOZON (Worthy of Preservation). As for the inscription, Nihonto Message Board blog discussion provides the following explanation of the inscription: "An expression of conviction as to being the best under the sun". On the other hand, there may be more in this confluence of symbols: the tomoe crest at 9:00 is "the kamon of Hachiman, the war god" [Family Crests of Japan; Stone Bridge Press, Berkeley, CA, 2007, p. 108]. The character 八 in the inscription cut stronger than the other kanji, and may be by a different hand in different time. 八 (hachi, eight): "The numeral eight was appreciated because its shape broadens toward the bottom, symbolizing eternal expansion" [ibid, p. 119]. It may be said that this tsuba is dedicated to Hachiman. Other crests (suhama, bellflower, seven-stars, plum and cherry blossoms) collectively allude to "good old times" when Fijiwara and Taira clans were in full bloom. Markus Sesko believes that the inscriptions reads: Hachiman: "the inscription is/was HACHIMAN (八幡), the God of War and a relatively popular inscription for tsuba, swords and armor." Elliott Long and Robert Haynes provide the following explanation of the inscription: "...hachi is correct and represents the name of the HACHI SHRINE. The inscription reads 'YAWATA' which is the name of the mountain in Mino Province where the HACHI Shrine is located". Details on Hachiman Shrine in Yawata (八幡市) can be found elsewhere, including Historical and geographical dictionary of Japan by Edmond Papinot. Van Ham auction house provides the following description: MON-SUKASHI TSUBA. MARUGATA. Japan. Momoyama period. Yoshiro school. Iron with inlays of brass. In hira-zogan technique with kebori engraving eight different family emblems (mon). An old inscription is dedicated to the deity Hachiman. D.4.5mm, Ø 8.3cm. Condition A/B. Supplement: Wooden box and NBTHK certificate.
  • Iron tsuba of mokko form decorated with trellis, vines, foliage, and gourds inlaid in brass with details carved in low relief.

    NBTHK: Tokubetsu Hozon №2003186.

    Momoyama period (1574 – 1603). Dimensions: H: 85.5 cm, W: 79 mm, Thickness (centre): 4.8 mm. Tsuba of a similar design can be found in this collection [TSU-0373]. In that example, the plate was later pierced with geometrical mon-like openwork to resemble Koike Yoshirō's handguards. More about this type of tsuba here.
  • Iron tsuba of round form decorated with eight roundels - circular emblems of flowers and/or family crests (mon) made of cast brass, pierced and chiseled in kebori, and with flat brass inlay (hira-zōgan) of vines or seaweed all over the plate. Hitsu-ana outlined in brass. Four positive silhouette roundels are 3-, 4-, 5-, and 6- pointing crests/flowers; four negative silhouette roundels are bellflower, cherry blossom, and suhama. Yoshirō school (Kaga-Yoshirō). The Momoyama or early Edo period, beginning of 17th century.   Size: diameter 77 mm, thickness 3,8 mm
  • Iron tsuba of round form, tapering from centre to the rim, decorated with eight roundels – circular emblems of flowers and/or family crests (mon) made of cast brass, pierced and chiselled in kebori, and with flat brass inlay (hira-zōgan) of water plantain (omodaka) and seaweed all over the plate. Hitsu-ana outlined in brass. Four positive silhouette roundels are 3-, 6-, 9-, and 12 – pointing crests/flowers; four negative silhouette roundels – bellflower, cherry and plum blossoms. Yoshirō school (Kaga-Yoshirō). Unsigned. The Momoyama or early Edo period, end of the 16th to the first half of the 17th century (1574-1650). Size: H: 88.3 mm; W: 88.7 mm; Thickness 4.0 mm (Seppa-dai), 3,2 cm (rim). Other Kaga-Yoshiro tsuba in this collection: TSU-0334: 7.7 cm; TSU-0342.2017: 89.6 cm; TSU-0344: 8.1 cm; TSU-0329: 8.0 cm; TSU-0376.2018: 8.1 cm; TSU-0379.2018: 8.2 cm. We see that the usual size is about 8 cm; larger pieces, such as this one and TSU-0342.2017 dedicated to Hachiman, are rare. Article about Yoshiro tsuba.
  • The chrysanthemoid (kiku-gata) iron plate with polished surface decorated with arabesque (karakusa) and paulownia (kiri) leaves and flowers in brass, copper and silver flush inlay (hira-zōgan) on both sides. Some of the inlay goes over the edge. Kozuka- and kogai-hitsu-ana are filled with lead plugs. Sekigane of copper. Chrysanthemum and paulownia are the symbols of imperial family. The face is signed: Izumi no Kami to the right of nakago-ana, and Yoshiro on the left; the back is signed Koike Naomasa. His signed work is considered by many experts to have been made-to-order only. The original wooden box (tomobako) with inscription (hakogaki) signed by Dr. Kazutaro Torigoye and dated Showa 39 (1964). The late Muromachi or Momoyama period, 16th century. Dimensions: 89 mm x 84 mm x 3.6 mm; Weight: 170 g. Hakogaki lid: Yoshirō  kikka-gata Hakogaki lid inside: Iron, signed on the omote: Izumi no Kami – Yoshirō; on the ura: Koike Naomasa. Kikka-gata, pronounced maru-mumi, two hitsu-ana, karakusa, and kiri design in brass, silver, and suaka hira-zōgan. Height 8.5 cm, thickness 3.5 mm. Herewith I judge this work as authentic. On a lucky day in July of 1964. Torigoe Kōdō [Kazutarō] + kaō According to Robert Haynes [Catalog #7, 1983; №32, page 42-43] "This full form of the signature is seen very rarely". His example, illustrated in that catalogue, measures: height = 86 mm, thickness at seppa-dai = 3.75 mm and signed Izumi no Kami Yoshiro on the back and Koike Naomasa on the face. The further description of his specimen by Robert Haynes:
    "Early signed example of the work of Koike Naomasa. The kiku shape iron plate is well finished. The flush inlay is brass, for the scroll work on both sides, with the leaves and kiri mon in brass, copper and silver with strong detail carving. Some of the inlay goes almost over the edge, which is goishi gata. The large hitsuana are plugged in lead with starburst kokuin surface design. [...]The face is signed in deep bold kanji: Koike Naomasa; the back is signed: Izumi no Kami, on the right and Yoshiro on the left. There are one or two small pieces of inlay missing. Sold by Sotheby London, Oct. 27, 1981, lot 368. Height = 86 mm, thickness (seppa-dai) = 3.75 mm, (edge) = 4 mm."
    Another similar example presented at: "Tsuba" by Günter Heckmann, 1995, №T55 — "Designation: Koike Naomasa. Mid Edo, end of the 17th century. Iron, hira-zogan in brass, copper, silver and shakudo, katakiri-bori. Tendrils and leaves. 87.0 x 78.0 x 4.0 mm." Reference: Japanische Schwertzierate by Lumir Jisl, 1967, page. 13. [SV: Actually, his tsuba is signed Izumi no Kami  Yoshiro on the back; and Koike Naomasa on the front, exactly as Robert Haynes's tsuba. Dating this tsuba Mid-Edo, 17th century may be considered a misattribution]. More details regarding the Yoshirō tsuba. 
  • Iron tsuba of round form pierced (sukashi) in a chessboard fashion and decorated with linear (sen-zōgan) and cast (suemon-zōgan) brass inlay, including symbols of the swastika, flower-lozenge, maple leaf, pine needle, etc. on both sides; rim and openings outlined with brass inlay. Nakagō-ana plugged with copper fittings (sekigane).

    Momoyama period. End of the 16th - beginning of the 17th century. Dimensions: Diameter: 75.5; Thickness: 4.5 mm.  
  • Iron tsuba of oval form with design of  a gourd or aubergine vine with fruits, leaves, and blossoms climbing a trellis, and a fence in yellow brass and red copper flat inlay (hira-zōgan); inlay engraved. Two latticed windows represented by openwork (sukashi). The iron web has deep black patina. The seller attributes this tsuba to Heianjo-Namban school, whatever it means. Momoyama or early Edo period, 17th century. Kaga or Heianjō School. Unsigned. Height: 77.3, Width: 73.1, Thickness at seppa-dai: 3.6 mm.
  • Iron tsuba of round form with dam-shaped rim (dote-mimi) pierced with hitsu-ana and two udenuki-ana (probably cut later on) decorated in flat inlay (hira-zōgan) with vines and symbols of thunder or lightning (possibly - family crest, mon). Hitsu-ana and nakago-ana with copper sekigane.

    Ōnin or Heianjō school, or, possibly Kaga or Umetada school. Momoyama period or earlier (Muromachi), 16th century. Unsigned.

    Size:  64.5 x 63.8 x 2.2 (center), 4.2 (rim) mm.

    Provenance: Lundgren Collection: [Japanese sword-fittings and metalwork in the Lundgren Collection. Published by Otsuka Kogeisha Co., Ltd., Tokyo 1992], №31; The Lundgren Collection of Japanese Swords, Sword Fittings and A Group of Miochin School Metalwork. Christie's Auction: Tuesday, 18 November 1997, London. Sales "GOTO-5881". Christie's, 1997, №2. Lundgren's description at Christie's: Heianjo tsuba. Unsigned. The circular plate decorated in brass hirazogan with flowers, plants and symbols of thunder, dote mimi and udenuki ana, late Muromachi period (16th century). Tokyo 1992 description: Sword guard with design of flowering plants and frets in inlay. Unsigned. Heianjo inlay school. 6.35 x 6.3 cm, thickness of rim 0.40 cm. Iron. Flat brass inlay. Muromachi-Momoyama Period, 16th century. Provenance: The Second John Harding. A somewhat look-a-like pieces can be found in various catalogues. The one in Naunton Collection, №172, is signed: Umetada of Yamashiro: "Iron, small, almost circular, with raised oval rim, inlaid all over with leaves and scrolls in brass hirazōgan."

  • Small iron tsuba for a dagger (tantō), of quatrefoil form (mokkō-gata), with raised rim (mimi), decorated with flat brass inlay (hira-zōgan) to form an abstract design alluding to the mushroom of immortality (reishi). Opening (hitsu-ana) to the left of nakaga-ana probably cut later and fitted with shakudo sekigane. Maker's signature on seppa-dai: Koike Naomasa (小池 直正).

    Momoyama period: End of the 16th - beginning of the 17th century. Dimensions: Height 53.7 mm; Width: 45.5 mm; Thickness at centre: 3.5 mm; at rim: 4.9 mm. Other examples of signed Koike Naomasa work in this collection: TSU-0346. Reference: The closest example in literature is in Compton Collection (II): №11 with the description: “A Koike School tsuba, Edo period (circa 1625), signed Koike Yoshiro. Sheet-brass flush inlay of cloud forms and wire inlay creating the same shape. Koike Yoshiro Naomasa worked from the Keicho to the Genna periods (1596-1623). He arrived in Kyoto from Kaga.” [Japanese Swords and Sword Fittings from the Collection of Dr. Walter Ames Compton (Part II) / Sebastian Izzard, Yoshinori Munemura. — Christie's, New York, October 22, 1992]. See: Yoshirō tsuba.    
  • Iron tsuba of slightly elongated round form decorated with design of melon flowers, vines, and leaves in brass flat inlay (hira-zōgan) on both sides. Slightly raised rim (mimi) carved in a way to simulate ring-shaped covering (fukurin). Kozuka hitsu-ana and kogai hitsu-ana both plugged with soft metal (tim or lead). Copper sekigane. Heianjō or Kaga School. Muromachi or Momoyama period, 16th century. Iron, hira-zōgan brass inlay. Round (maru gata) form, diameter 79 mm. Size: 80.3 x 78.4 mm; thickness at seppa-dai: 3.4 mm; at the middle: 3.8 mm; before the rim: 2.4 mm, rim: 2.8 mm. Note on design: though this design resembles family crests with oak and mulberry leaves, I believe it's  a melon flower [see Jeanne Allen. Designer's guide to Samurai Patterns. Chronicle Books, San Francisco, 1990, page 114, №130 "Melon Flowers":

    Jeanne Allen. Designer's guide to Samurai Patterns. Chronicle Books, San Francisco, 1990. Page 114, №130.

    Note about the distribution of thickness (niku-oki): "this tsuba has toroid features, niku raises from the rim towards the centre but thins once more out when approaching the seppa-dai" [M. Sesko, "Handbook...", p. 48].
  • Iron tsuba of mokko form decorated with brass flat inlay (hira-zōgan) all over on both sits and going over the rounded rim. Black patina, well-forged iron. Hitsu-ana outlined with brass inlay. Former owner's catalogue number in red paint reads 25-17-61. Gary D. Murtha provides detailed account of this type of tsuba in Japanese Sword Guards. Onin-Heianjo-Yoshiro book on pages 118-122. He calls this type of tsuba "Heianjo Mogusa Tsuba": "The term mogusa is commonly used for an inlay design that represents an aquatic weed, similar to a duck weed or sago plant, which is known to quickly invade and overtake bodies of water. [...] Perhaps the visual image has some cross-over meaning for samurai in that, like the plant, a small aggressive samurai force could conquer a larger foe/area." I tried to find any reference to "mogusa" in literature, - to no avail. Neither on the vastness of internet, including Wikipedia... I did find the "duckweed" (one word), but visually it has nothing to do with the pattern on tsuba. "Sago plant" probably stands for 'Sago palm", and there is some very distant reminiscence in the construction of the sago palm leaf and the said design of inlay, but I would not go that far. In the old catalogues, such as Naunton and Hawkshaw collections, this pattern as called "sea weed" and/or "conventional fir". I will stick to these descriptions, tested by the time, and leave the enigmatic "mogusa" alone. Obviously, this type of tsuba has transformed into Yoshirō tsuba, both in Kaga province and Bizen province. Momoyama period (ca. 1660). Dimensions: 74.5 x 73.7 x 4.4 mm.
  • Iron tsuba of the round form (丸型, maru–gata), decorated with brass flat inlay (平象嵌, hira-zōgan) of bellflowers, leaves, and vines on both sides, inlaid brass is carved in low relief; wide rim (dote-mimi) also inlaid; the plate is pierced with hitsu-ana (probably original); nakago-ana plugged with copper sekigane. Dimensions: Height: 84.1 mm; Width: 82.0 mm; Thickness (centre): 2.8 mm; mimi is 11.8 mm wide and 4.7 mm thick. Produced at the end of the 16th century, in the Momoyama period (1674–1703).