Hello all, I was hoping some people on here in the errors and varieties scene know about some good sources that list errors and varieties of world coins and could possibly share them (if there are any)? For reference, some well-known U.S. Coin sources for these are Wexler's, CopperCoins, and Variety Vista. I am mainly looking for sites similar to these, or books that are helpful in this field. Thanks! EDIT: To be a little more specific as I realized this may be a very vague question, I am looking for any that focus on Canadian currency, but the original question still stands for other countries.