Archaic silver punch-marked coin - Bihar series, generally attributed to 'Magadha Janapada' of pre-imperial period, (c.450-400 BC), struck to Vimshatika standard, similar Rajgor Series 0, 4.77g. Obv: Three punches - 1. Sun, 2. Six-armed symbol (in centre), 3. Large dot with six small dots above; plus three small banker's marks. Rev: plain.About extremely fine, Very rare.