//Hira-Zōgan
  • 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:    
  • 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."
  • 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.

       
  • Shakudō tsuba of the slightly vertically elongated round form (nagamaru-gata) decorated by gold in flat inlay (hira-zōgan) with three insects (cricket, locust, and praying mantis), grass and dewdrops motif. Kogai hitsu-ana is plugged with gilded soft metal. Height: 70.2 mm; width: 66.4 mm x Thickness at seppa-dai: 4.5 mm. Edo period (from ca. 1700 to ca. 1850) Unsigned. Attributed to Kaga School or Murakami School. Almost identical tsuba (no dewdrops, though) is illustrated and described at page 60 of Kokusai Tosogu Kai. 7th International Convention & Exhibition, November 1st, 2011 at Tokyo National Museum, page 60. It is attributed to the Kaga School, Mid Edo period (Late 17th - early 18th century). Dimensions: 70.5 x 66 x 4.5 mm. "The rich black shakudo plate has been slightly lowered (dished out) and then polished. Gold insects crawl amongst grasses, depicted by Kaga style hirazogan (flat inlay). One tendril of the mantis overlaps onto seppa-dai. The mantis boldly looks out from the tsuba in a curious way. This style of Kaga tsuba was popular during the Genroku era (1688-1703)."

    7-U17. Ron Hartmann Collection.

      Another source is Japanese Sword Fittings. A descriptive catalogue of the Collection of G.H. Naunton, Esq., completed and illustrated by Henri L. Joly, - 1912:
    Kanazawa in Kaga was a centre of fine metal work during the whole of the Tokugawa period. At first the inlayers of Fushimi following the Daimyo Maeda went to Kanazawa, then some of the Gotō masters proceeded from Kyoto for short periods to work for the Daimyo, so that their influence was strongly impressed upon Kaga work..." A somewhat look-a-like tsuba is illustrated at plate XXVIII, Kaga Inlay, №653 with the following description at page 52: "Shakudō, inlaid with five insects in gold: crickets, praying mantis, grasshopper, in the style of Takagawara Ujitsugu.
    According to M. Sesko, Ujitsugu was a master from Katsuki and Kaneko School in Kaga, son of Ujihira. Ujihira's father Ujiyoshi died in 1802. This brings us to the mid-19th century, instead of mid-18th or earlier. On the other hand, a very much look alike specimen at MFA collection (ACCESSION NUMBER 17.1061) has the with the following description: Edo period. Late 18th–early 19th century. Murakami School. Main material: shakudo; other metals: gold; decorative technique: iroe hirazogan.

    MFA # 17.1061

    A detailed account of Murakami school can be found at The Japanese toso-kinko Schools.// Lulu Inc., 2012 by Markus Sesko, on pages 235-239. All-in-all, it's either Kaga School or Murakami School, either ca. 1700 or ca. 1850. Quite a range! SOLD
  • Iron tsuba of round form decorated with eight circular emblems of flowers and/or family crests (mon) made of cast brass, pierced and chiseled in kebori, as well as with flat brass inlay (hira-zōgan) of vines, leaves, and flowers all over the plate. Yoshirō school (Kaga-Yoshirō). The Momoyama or early Edo period, 17th century. Size: diameter 80 mm, thickness at seppa-dai 3,6 mm. Symbols: [12:00 o'clock] - Wood sorrel (katabami) and swords ; [9:00] - Cherry blossom (sakura); [7:30] - Bellflower (kikyō), kamon of Toki clan; [3:00] - possibly, a six-petal Chrysanthemum (kiku) or a Passion flower (tessen); [1:30] - Hemp (asanoha). The symbols at 6:00, 10:30, and 4:30 o'clock seem to be geometrical patterns of auspicious meaning: a cross in a square, a four pointing star, and a diamond, respectively. Alternatively, we may look at this piece as purely decorative, with patterns at 12:00, 3:00, 6:00, and 9:00 o'clock in negative openwork (in-sukashi), and at 1:30, 4:40, 7:20, and 10:30 o'clock - in positive openwork (ji-sukashi, or yō-sukashi). Markus Sesko in his Handbook of sword fittings related terms [Herstellung und Verlag: Books on Demand GmbH, Norderstedt, 2011] discriminates this type of openwork in a separate class: Ranma-sukashi: "This term is applied to circular sukashi with family crests to their inside, which are arranged running along the rim area. The description goes back to the opened boards (ranma) between the sliding doors and the ceiling of Japanese rooms. Ranma-sukashi are mostly seen on old Heianjō- or Yoshirō-zōgan-tsuba but also on works of Hayashi Matashichi" [page 30].
  • 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 leaves all over the plate. Both hitsu-ana trimmed in brass. Nakago-ana of rectangular form, with copper sekigane. Four positive openwork (ji-sukashi) roundels at 12, 3, 6, and 9 o'clock; and four negative openwork (in-sukashi) roundels with cherry blossom, bellflower, and two variations on suhama theme. Yoshirō school (Kaga-Yoshirō). The Momoyama or early Edo period, late 16th to early 17th century. Size: diameter 81.4 mm, thickness 4.7 mmat seppa-dai, 4.0 mm at rim. Christie's lot description: AN IRON TSUBA; EDO PERIOD (17TH CENTURY). THE DOLPHYN COLLECTION OF SAMURAI ART. The round iron tsuba pierced with roundels of various floral motifs interspersed among scrolling foliage, all inlaid with brass. 8.1 cm. high. Provenance: Pabst Collection (no. 338).
  • 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 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.