Name of the blacksmith: 武州住重直 "Bushu Ju Shigenao", real name Yoshioka, living in Edo. (Tokyo)
Period: 18th century 1729 - Edo Period
Materials: Iron
Shape: Naga Maru Gata (Oval)
Dimensions: Diameter 7.2cm x 6.8cm
Thickness: 3.74mm
Weight: 104grs
L'Atelier du Sabre Japonais