Shakudo nanako kozuka signed "Yamanaka Mitsumasu" with Kao. Mitsumasu was active around 1825-1850 in Echigo Province. He was a student of Iwama Nobuyoshi. Unfortunately I can not find his verified signature to compare.
Decorated with spiny lobster (Ise Shrimp) a New Years celebration theme.
Made in edo period.
Size: 97 mm x 14 mm x 4 mm
In custom made kiri box.