I am posting the same thread start that I did in the "error coin" forum here, because there was a big tadoo about alloys/weights of Canadian coinage. Here it is: There have been more than a few inquiries on here about mintages, specs, and references for Canadian coinage. This section of the CCF site is about as handy as you can get for sections/forums/refs on Canadian coinage. Scroll all the way through each denomination to get past links to other sites (Ebay, etc): https://www.coincommunity.com/canadian_coin_facts/ Just click on the Eliz 25 cent section and see what I mean for specs on all the RCM crap that they put out