This 1967 Poland 10 Zlotych coin features the portrait of Mikolaj Kopernik, the famous astronomer. Made of copper-nickel and measuring 29mm in diameter, this coin is a great addition to any collection. While the circulated/uncirculated status is unknown and it is uncertified, it remains a unique piece of Polish history. Minted in Poland, this coin is a must-have for anyone interested in world coins.