1941 is my birth year. I've been working on a worldwide birthyear set for several years. The low face value coins from Peru (1 & 2 centavos) have many varieties. The Krause catalog is only marginally helpful. For instance, the 1941 1 centavo has thick and thin varieties. But that's all Krause says. I assume they can be differentiated by weight but Krause doesn't give any numbers for that. Is there a source that will help me with that AND with all the 2 centavos varieties? Right now I have 5 unc 1c coins that weigh: 2.39 gm 2.40 gm 2.43 gm 2.49 gm 2.53 gm Are some of those thin planchets and some thick planchets?
