2011 Standard Catalog of World Coins 1901-2000, 38th Edition to find coins for my birth year set. I know tackling a job that large (2000+ pages) is subject to errors. But I ran into some that were driving me nuts. France 10 centimes of 1941. The 38th Edition lists 6 varieties. I have 4 and was trying to verify which ones I have. Three were easy but the fourth was driving me up the wall. I wanted to get it ID'ed so I'd know which 2 I was missing. Just couldn't get it done. BUT I have the 2016 Standard Catalog of World Coins 1901-2000, 43rd Edition on disc. It's a bit of a pain to use but in desperation I decided to take a look. BINGO!!! The disc only lists 5 varieties. I assume that's a correction from the older catalog. NOW I know which varieties I have and which 1 I'm missing. I'm breathing easier now. I'm sure others have found errors in the Krause catalogs. And it seems they correct them when they find out their error.