Sierra Leone/Uruguay, a trial piece in aluminium, bust of Sir Milton Margai right as on the 1964 Sierra Leone coinage, ROYAL MINT TRIAL around, reverse value in wreath, from the Uruguayan 5 Centesimos of 1953, IMI KNB in field, edge plain, struck en médaille, 4.67gm. Brilliant mint state, very rare (£30-40)