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,  2.90g, 12.0 x 13.5mm, (Unlisted in Raj. Series), about very fine, Extremely Rare.