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

Tsuba of chrysanthemoid form (kikka-gata) with yamagane core and woven copper wire pattern. Copper sekigane. Shingen school. Height: 70.2 mm; Width 67.2 mm; Thickness at seppa-dai: 3.4-3.6 mm, overall 7.3 mm. Weight 82.7 g Inscription on the wooden box reads: "Muromachi period Mumei Zōgan Shingen Tsuba" Muromachi period, 16th century. Age attribution is based on the fact that the core is made of yamagane; later copies of Edo period are usually made of iron. This small and light tsuba was likely mounted on a combat sword, while larger and much heavier woven wire Shingen tsuba of Edo period were of purely decorative purpose. http://varshavskycollection.com/shingen-tsuba/

Ko-kinko ymagane cast tsuba of mokko form (kirikomi-mokkō-gata) with chiseled diaper pattern of double head waves on both sides and a rabbit cast and carved with its eye inlaid in yellow metal (gold or brass) on the face. Fukurin which holds together the sandwiched layers of metal (sanmai) is about 2.4 mm wide. A look-a-like tsub of oval form instead of mokko-gata  is illustrated at Robert E. Haynes's Catalog #3,1982 on page 11, lot 15: "Rare design in style of Sanmai (three layers) / Wasei work. With yamagane core and heavy rim cover. The web plates are carved with double head Goto style waves and the face has a fox. The web plates were riveted at the seppadai.  See Lot 4, page 8. Ca. 1350. Ht. 6.6 cm, th. 3 mm" [underscore mine]. Quality of photo is so poor that I decided not to provide it here. Muromachi (if we follow Robert) or Momoyama period. The Momoyama attribution is mostly based on a fact that "waves and rabbit" motif became most popular in Momoyama times. Size: 68.5 x 59.8 x 4.0 mm. NBTHK Certificate № 423120. This tsuba is listed at Yakiba website with the following passage: "Attributions as well as dating of this type of tsuba has been the subject debate over the years. There are those who believe these type of tsuba to be ko-Mino (early Mino School) tsuba, others believe them to be tachi-kanaguchi tsuba. Still others insist they are simply ko-kinko (early soft metal) tsuba. This tsuba was authenticated and determined to be "Ko-Kinko" by the NBTHK". Oval form tsuba with the same design can be found in this collection - TSU-0323.

Yamagane tsuba of round form with design of a 14 petal chrysanthemum (kiku) in cast openwork (sukashi), with slightly raised rounded rim. Early Muromachi period (1393-1457). Size: Height: 64.5 mm; Width: 64.0 mm; Thickness at seppa-dai: 4.1 mm; Weight: 52.5 g. Provenance: Sasano collection (though not illustrated in the book 'Sasano: Japanese Sword Guard Masterpieces from the Sasano Collection, 1994', which only covers tsuba made of iron). Wooden box (tomobako) with inscription (hakogaki) by Sasano Masayuki. References: Illustrated on p. 140 at Tosogu: Treasure of the samurai by Graham Gemmell in the article Muromachi period tsuba by Robin Peverett, London, 1991, pp. 131-145. Sold at Sotheby's, London, Thursday 10 April 1997 Sotheby's, London, 1997 [Japanese Swords and Tsuba from the Professor A.Z. Freeman and the Phyllis Sharpe Memorial collections], p. 16: "A ko-kinko bronze Tsuba, early Muromachi period (1393-1453) of circular form, with raised rounded rim, pierced with kiku petals and with a small elongated kozuka-hitsu, the work appearing to be cast and finished by hand. 6.4cm, thickness at centre 4.15mm, at rim 4.8mm. With a Tomobako, bearing a hakogaki by Masayuki Sasano, with rating Shu. Estimated: £1,000-1,500." Hakogaki (courtesy M. Sesko): 古金工 鐔 Ko-Kinkō tsuba 菊花透 無銘 山銅地透 時代 室町前期 古雅入念 秀作 昭和戊辰年伏月 素心鑑 kikka-sukashi, mumei yamagane, ji-sukashi jidai Muromachi-zenki koga nyūnen, shūsaku Showa tsuchinoe-tatsudoshi fukugetsu Soshinkan Kikka-sukashi, unsigned. Of yamagane and with ji-sukashi. Era is early Muromachi period. Excellent and carefully made work of classical elegance. June in the year of the dragon of the Shōwa era (1988) Soshinkan (pen name of Sasano Masayuki).