http://cgi.ebay.com/Lincoln-Penny-and-Roosevelt-Dime-With-Odd-Metal-Frame_W0QQitemZ180442844975QQcmdZViewItemQQptZCoins_US_Individual?hash=item2a033b4f2f#ht_500wt_1182 AND ALSOhttp://cgi.ebay.com/1948-D-ROOSEVELT-SILVER-DIME-HUGE-CUD-On-REVERSE_W0QQitemZ290379494594QQcmdZViewItemQQptZCoins_US_Individual?hash=item439bf774c2#ht_500wt_1182
the dime looks like someone put solder on it. CUDS only occur on the rim IIRC. who knows about the other ones.
Both look like post mint damage. The first auction, the coins are "dryer coins", they were caught in the fin of a commercial dryer, it gives off the same appearance as a spooned coin, which is common with silver coins.
A debatable point, and there has been much debate about it. Basically a cud is nothing but the result of a broken die, and dies do not break only on the edge. They can break anywhere resulting in the same effect appearing anywhere on the coin. But in this case, I will agree with Joshy given that there are defined edges to the material in the center of the coin. Had the coin been the result of a broken die those edges would not be there.
