Mei (signature) : Mumei
Length : 8.00 cm x 7.88 cm ( 3.15 inches x 3.10 inches.)
Thickness of rim: 0.51 cm ( 0.20 inches.)
Jidai(era) : Later Edo period to Meiji period.
Special feature : Chinese phoenix carved on Shakudo fine Nanakoji plate with gold color. Carving are done even to the rim.
This Tsuba seems to be influenced from Sano school.
AOI estimation paper
In Kiri box.