English translation of the book indicated above Nihon Tō Kōza, Volume VI, Part 1 by Harry Afu Watson, AFU Research Enterprises, Inc., 1993. Tsuba in question illustrated on page 14 and described as follows: " Tsuba mumei Ōnin. Tetsu ji maru gata ko-sukashi tsuchime shitate shinchū suemon ten zogan maru mimi. Brass suemon". My question remains: why such a text is called 'translation' while it looks more like transliteration of romanization? 
Kyo school iron tsuba of round form decorated with an eight-plank bridge (yatsuhashi) and irises (kakitsubata) in openwork (sukashi).
Late Muromachi period, Tenbun era (early 16th centiry).Dimensions: 80.0 x 77.2 x 4.1 mm.
The design alludes to the scene in 'Ise Monogatari', where Ariwara no Narihira being exiled from Kyoto to the Kanto region crossed the eight-plank bridge at Mikawa looking at the irises in bloom and composed a poem expressing his desire to return to Kyoto. A lot of tsuba have been produced with the similar design.
Reference: Masterpieces from the Sasano collection, 1994, p. 98, №69.
Size: 76.0 x 72.6 x 6.2 mm
Unsigned.
For information regarding shakoh tsuba see article 'Kirishitan Ikenie Tsuba by Fred Geyer at Kokusai Tosogu Kai; The 2nd International Convention & Exhibition, October 18-23, 2006, pp. 84-91.
Pre-Columbian, South Coast of Peru, Nazca, ca. 22- BCE - 125 CE.Polychrome vessel of organic, phytomorphic form and thin walls finely painted with six slithering serpents and protruding floral motifs in hues of red, orange, cream, black, grey, and white.
Chips of base and rim. Pressure fissures on and a bit above the base. Surface wear commensurate with age.
Size: Diameter: 19 cm; Height: 16 cm; Mouth diameter: 8.5 cm.
Yamagane (bronze) tsuba (kagamishi, or mirror-maker) with the design of tomoe (comma) and suhama in openwork. Surface treated with hammer marks and chiselled with the design of maple leaves and encircled two bars (maru-ni-futatsu-biki, Ashikaga clan family crest, or mon) on both sides. Raised rim or rim cover (fukurin). Custom kiri-wood box.
Size: 87.4 x 86.2 x 2.9 (center), 4.9 (rim) mm; weight: 120 g.
Fuchi-kashira made of shakudō carved and inlaid with gold and red copper with the design of a bat and a fruit (persimmon?). Nanako surface.
Fuchi: 37 x 19 x 7 mm. Kashira: 34 x 16 x 5 mm. Main material: shakudō. Other metals: gold and copper. Surface treatment: nanako-ji.
7-U17. Ron Hartmann Collection.
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 yamagane tsuba of oval form with green-ish black patina decorated in usuniku-bori carving and gold iroe with wisteria (fuji) motif plus nanako-ji ground on both sides. Kozuka-hitsu-ana possibly cut later.
Unsigned.
Momoyama or may be even Muromachi period. Dimensions: 70.0 x 61.2 x 5.0 (center) mm
Iron tsuba of round form (tsurumaru) decorated with a design of crane and pines, or "nesting crane (sugomori-tsuru)" in openwork (sukashi). Details carved in kebori. Rounded rim.
Size: 74.7 x 69.8 x 4.8 mm.
Unsigned.
Edo period, ca. 17th century.
NBTHK Certificate № 463485. The certificate says it's a Higo School piece. The design was popular in both Akasaka and Higo schools. The Akasaka example: at Kodogu and tsuba. International collections not published in my books. (Toso Soran). Ph. D. Kazutaro Torigoye, 1978, p. 246: "Late Edo. Jiyūgata. Sined: Akasaka Tadanori saku."
Torigoye, 1978, p. 246. Late Akasaka.
Kurogane no hana, 2014, p. 69, №56. Higo tsuba.
Thin six-lobed iron plate of brownish color is carved on each side with a groove that follows the rim and a concentric grooves around the center of the plate, also carved with six thin scroll lines (mokkō or handles, kan) that follow the shape of the rim. Mokume surface treatment. Hitsu-ana possibly added at a later date, and kogai-hitsu-ana plugged with gold. Silver sekigane.
Signed: Kunihide [國秀]. Higo school, 1st generation swordsmith.
Mid Edo period, ca. 1800.
Would be possibly attributed to Kamakura-bori school revival of the 19th century.
References: Nihon Tō Kōza, Volume VI / Japanese Sword / Kodōgu Part 1, page 231: Enju Kunihide, a tōshō from Higo: "...forging of the jigane is excellent, and there are also pieces with mokume hada."
Haynes Index Vol. 1, p. 741, H 03569.0: "Enju Kunihide in Higo province, died 1830, student of Suishinshi Masahide. Retainer of the Hosokawa Daimyō, etc."
Additional Information from Markus Sesko: This tsuba indeed is made by Enju Kunihide, who in his later years signed the HIDE [秀] character as HI [日] and DE [出], as here:
Size: 77.4 x 74.9 x 2.7 mm
Similar pieces are:
1. In this collection № TSU-0341: Kamakura-bori tsuba with mokkō motif. Muromachi period, 15th - 16th century.
2. Dr. Walter A. Compton Collection, 1992, Christie’s auction, Part II, pp. 14-15, №16: “A kamakurabori type tsuba, Muromachi period, circa 1400. The thin, six-lobed iron plate is carved on each side with a wide groove that follows the shape of the rim, and with six scroll lines and a single thin circular groove. […] The hitsu-ana was added at a later date, circa 1500-1550. Height 8.3 cm, width 8.6 cm, thickness 2.5 mm. The tsuba was initially intended to be mounted on a tachi of the battle type in use from Nambokucho to early Muromachi period (1333-1400)”. Sold at $935.
3. And another one in Robert E. Haynes Catalog #9 on page 24-25 under №23: “Typical later Kamakura-bori style work. This type of plate and carving show the uniform work produced by several schools in the Muromachi </em period. Some had brass inlay and others were just carved as this one is. The hitsu are later. Ca. 1550. Ht. 8.8 cm, Th. 3.25 mm”. Sold for $175.
A hand-built polychrome ceramic stirrup vessel depicting the head of a jaguar. Painted with a sienna-hued base, this spotted beast features an abstract visage of almond-shaped eyes opened wide with long feather-like lashes, a rectangular nose protruding from a nasal bridge decorated with a quadrilateral motif, and a large open mouth, showing both upper and lower teeth, which are also spotted, all painted in shades of cream, black, cream, grey, light grey, and beige. Highly burnished, the lustrous vessel exhibits two spouts, also functioning as ears of the jaguar, with a flat handle arching between them. This tool would have been a grave good intended to hold some kind of libation or offering and was likely made in a specialist workshop.
Colours: Sienna (base), black, cream, grey, light grey, beige (7 colours).
Dimension: Width (mouth-to-mouth): 15 cm; Height: 14.5 cm; Diameter of the body: 10.5 cm. Provenance: Hans Juergen Westermann collection, Germany. The Wari State was the first expansionistic power to develop in the Andean highlands. It was located in Vilcabamba, modern Espiritu Pampa (Plain of the Spirits), Echarate District of La Convención Province in the Cuzco Region of Peru. The Wari expanded around AD 650 and by the time of their collapse in AD 1000 they controlled much of the central Andes.
Iron tsuba of round form decorated with a deer and maple leaves in positive silhouette openwork (ji-sukashi), with details finely carved in low relief (kebori). Nakagō-ana plugged with copper fittings (sekigane). Traces of lacquer on the surface.
NBTHK: Hozon, №424947.
Design: An autumnal tsuba with an allusion to Kasuga Shrine in Nara.
Attributed by NBTHK to Shoami. Age: Probably the Momoyama period (1574 – 1603) or early Edo period (1603 – 1650), but judging on the item's substantial size (diameter 86.6 mm) and considerable thinness (3.4 mm) may be attributed to earlier times (late Muromachi period, 1514 – 1573).
