Mei (signature) : Mumei(Unsigned)
Length : 1.38cm x 9.55cm ( 0.54inches x 3.76inches)
Jidai(era) : Edo period.
Special feature: On granulated shakudo plate, two dragons and sword are engraved and inlayed with gold. It seems that the dragons are fighting over the sword. The design is finely engraved which gives us a strong impression.
AOI estimation paper
In Kiri box.