Punch-Marked Coin, Vanga Janapada, Copper 1/2 Karshapana, Obv: three symbols on the obverse include, a wheel, a six-armed symbol and a boat representing riverine trade in bengal, Rev: conch shell (shank) single punch, 2.10g, 12.50 x 13.39mm, about very fine, Extremely Rare.