Other interactive groups

[diamond]

http://groups.yahoo.com/group/errorcoininformationexchange/

Error Coin Information Exchange. Yahoo group devoted to mint errors.

http://www.coppercoins.com/forum/index.php?sid=b72d62715aedb96709f642055a6f030d

Coppercoins forum. Devoted to Lincoln cent varieties.

http://groups.yahoo.com/group/Shield_Nickels/

Yahoo Group devoted to Shield Nickels. Heavy emphasis on die varieties.

www.calgoldonline.com (http://www.calgoldonline.com)

Discussion forums and pictorial guides relating to California Gold Fractionals.