Ko-gai:Wari Kougai. copper plate.
Mei (signature) : Mumei

Length : 21.3 cm or 8.385 inches
Jidai(era) : Late Edo period.
Special feature : On the copper plate, a bamboo leaves are engraved by Syakudo
plate.
It looks like simple but the convination of the copper and Syakudo
black plate makes pizazza.
Japanese ancient paople use these Kogai as a Chopsticks、An earpick and other way.

AOI estimation paper.
In Kiri box.