Boxing cards - need help
 

Posted By: <b>Derek</b><p>Hi! Can anyone identify these cards I recently came across? The bottom two are postcards from 1921, but the top 2 are of unknown date and contain a picture of another player on the reverse. Any market for such items? Thanks! Derek<br /><img src="http://www.network54.com/Realm/tmp/1117323791.JPG">