SuperSafe50 2x2 SelfAdhesive Cardboard Coin Holders Half Dollars

Nice holders, but note on the larger sizes (such as 1/2 dollars or larger) they have a tendency to pop open. I've had to staple more than a few to keep them shut, which defeats the whole purpose of self-seal.

The seal did not stay closed, and the coins moved from holder. I was looking for an air seal, but this did not work.