Japan. Tokugawa Shogunate. 1862. Akita Nami Sen (Akita wave coin). Copper. Hartill 7.1. Rare. 38.54g Obverse: 21 waves. Reverse: include punch 秋 Akita. Although originally valued at 100 Mon, their lack of popularity eventually depreciated the value. The wave design shares the same design as the common Kanei Tsuho cash coins with the waves at the back. However, this was a solid disc of high purity copper with only the waves in its full glory and a uniface back. Characteristically crude and with tell tale adjustment marks and hand-cut planchet albeit a heavy and solid piece at 38g (approximately 1 tael) worth it's weight in copper. A common Kanei Tsuho wave cash for comparison (not in similar scale)
oh that cool, bet it feels great in hand like a big ol' ptolemy (weren't they kind of going for worth the weight in bronze initially also?).