AN IRON TSUBA AND A KO-KINKO TSUBA The first by Sunagawa Masanori (active late 18th century) Edo period (1615-1868), 18th/early 19th century The almost circular tsuba formed as a ring bridged by a central band chiseled in low relief with waves embellished with gold dots of spray, the outside of the seppadai fitted with a shakudo rim, signed Sunagawa Masanori saku (Made by Sunagawa Masanori); the second a shakudo mokko gata tsuba carved on the web with crashing waves, the dots of foam in gold Each with a wood storage box 2 7/8in (7.3cm) high, the largest