A sentoku tsuba
Attributed to Hirata Hikozo I, 17th century
Of circular form, the plate engraved with Okina yasuri and inlaid with a crow diving down to a shell fish among grasses, in gold and shakudo takazogan, signed with a kao.
7.9cm (3 1/8in).
FOOTNOTES
鍔　翁鑢地に鴉　銘「（花押）」　17世紀

For a somewhat similar example with the addition of an Odawara fukurin, see Dr. Kazutaro Torigoe, Tsuba Kanshoki, 1975, p. 138.