1835-1870, Japan, Shogunate. Large Bronze Tempo Tsuho (100 Mon) Coin Reference: Opitz p.228-230, KM-7.1. Denomination: 100 Mon (Tempo Tsuho) Mint Period: 1835-1870 (Bakamatsu / Late Tokugawa Shogunate) Material: Bronze Weight: 22.13gm Diameter: 49mm The mon was a currency of Japan from the Muromachi period in 1336, until 1870. The Chinese character for mon is ? and the character ...