Jidai (era) : early-Edo period – 17th century ca. 1680
Signed : Haruda Yasuchika Saku (working in the 1680’s)
Motif design : sea Shell
Material : well forged & deeply carved very fine iron plate with a rich & deep dark chocolate brown patina
Tsuba shaped like a cup
Very good workmanship with very fine details
Sizes : 3-5/16″ x 3-1/8″ or 8.4 cm x 8.0 cm