I'm trying to ID the mintmark on this 1893 5 Centavos. It appears to be a C ^A M, but I don't know what mint that might be. From the Guide to Decimal Coinage of Mexico:
Maybe it's Ca (for Chihuahua)? But there aren't any mintage numbers listed for that on this page: http://en.numista.com/catalogue/pieces6127.mobile.html#lien_collection
My reference has Chihuahua issuing 133,000 of the 5 centavos .9027 silver, often given as .903 Standard Catalog of Mexican Coins, paper money, and medals by Vogt and Bruce.
My guide to Mexican coins by Buttrey & Hubbard has the 5c of 1893 CaM (Chihuahua Mint & Assayer's Initials) and a mintage of 133,020