Kozuka made of pure copper with Daruma motif. The engraving technique is known as katakibori ("half-cut carving"). Signed on the back: Yasuchika. Size: 96.5 (H) x 14.5 mm (W). Edo period (Late 18th century). The technique of Katakiribori was developed by  Yokoya school of artisans. Detailed account of Yasuchika family of kodōgo carvers is given at Japanese Sword Fittings from the Alexander G. Mosle Collection; Sebastian Izzard LLC, 2004 on page 64. The article ends with the following statement: "Given the popularity of his style and his many students, it is not surprising that a number of works bearing Yasuchika's signature are today disputed." S. Izzard attributes Yasuchika masters to Nara school. Yasuchika-signed kozuka in Important Japanese Swords and Sword Furniture and Works of Art [November 5, 1980, sales "Kotetsu". New York, Christie, Manson & Woods International Inc., 1980, pp.92-93, lot 172 and 173] are stylistically very different to our example. A shibuichi katakiribori kozuka, bearing the signature of Yashuchika, is illustrated at The Hartman Collection of Japanese Metalwork [sold at auction by Christie, Manson & Woods Ltd. June 30 and July 1, London, 1976] on page 82, lot 291. It depicts Daikoku and stylistically similar to ours. The description on page 83 says: "signed Yasuchika, and inscribed "drawn by Hanabusa Itcho" (Yasuchika IV, school of Iawamoto konkan, circa 1800)". A detailed account of Yasuchika signatures is presented at Masterpiece tsuba and kodogu from the Hans Conried and Alexander G. Mosle collections. Important woodblock prints by Utamaro, Hokusai, Hiroshige, Yoshida and other masters. San Francisco, September 1-25, 1983. Catalog #7. Robert E. Haynes, Ltd., pp. 141-174. The example that looks like ours is on page 146: Though we have to admit that the example from Catalog #7 by Robert E. Haynes looks much stronger.    

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.      

Iron tsuba of round form with design of  hatchet, snowflake, and triple diamond in openwork (ko-sukashi), and inlaid with five concentric circles of brass dots (ten-zōgan) and brass inner circular line. Sukashi elements outlined in brass.

Late Muromachi period. Diameter: 82.4 mm; Thickness: 3.0 mm The triple lozenge (or diamond) is similar to the one on TSU-305 from Sasano Collection # 15. Very old motif; as Sasano remarks in his book "...represents the unstable political situation at the time".

Kokusai Tosogu Kai 5th International Convention & Exhibition, October 28-30, 2009 at NEZU Museum, Tokyo, Japan, on page 83 provides the following explanation of the triple diamond symbol: "The pine bark is the form of the Diamonds, "Bishi", mon, seen from Nara period, found on cloth stored in the Shoso In, and used primarily by the Takeda family. The form of Bishi mon [similar to ours] is called "Chu Kage Matsukawa Bishi", (Middle Shaded Pine Bark Diamond)."

A combination of hatchet (usually an axe) and a triple diamond (Matsukawabishi) alludes to the Nō play Hachi-no-ki (ref: Iron tsuba. The works of the exhibition "Kurogane no hana", The Japanese Sword Museum, 2014; AND Sasano: Japanese Sword Guard Masterpieces from the Sasano Collection. By Sasano Masayuki. Part One. Published in Japan in 1994.