I recently won a several Ebay auctions for some coins in these envelopes, a total of seven coins. The Greek pictured, several medieval Italian (Venice and Verona) a crusader, and a Abbisid and several others , all silver all for an average of $7.00 each. My question is, has anyone ever seen these before and is there any value in keeping the coins in the envelopes or should I just remove the coins?