City of Amsterdam; district 20; piece that gave the right to rye bread at a price of eight and a half penny; diamond-shaped piece. Front: in round stamp: crowned coat of arms; flanked by two lions within a round pearl border. Reverse: in round stamp: number 20 above letter W inside round pearl edge; Amsterdam; anonymous; 1662; founding; h 3.1 cm x w 2.8 cm x w 19.35 gr