Punch Marked Coin, Kosala Janapada (500-400 BC), Silver Karshapana, Obv: punches consisting of three composite 'S' shaped geometrical designs and whorled projections, Rev: punches of primitive triskeles and other geometric symbols, 4.01g, 25.5x21.9mm, (Unlisted type in major publications), choice very fine, Rare.