I've had a few coins through the post in wallets, one side has a card in the other holds the coin. The only ones I've seen are PVC. Is there a Mylar alternative ? I really like them as opposed too flips but don't want my coins damaged with time either. Thanks, Mark.
Is this what you mean? http://www.jpscorner.com/coin-flips.html Scroll down to Saflip Archival Flips. Chris