Posted By:
leonThere was a great thread on this very question about a week ago. In general the more rare a card is the more value it has as a trimmed speciman. I think for normal scarcity around 10%-20% of untrimmed value is in the ballpark...regards
http://www.network54.com/Forum/thread?forumid=153652&messageid=1126101429&lp=1126207719