Problems from coin folders

Please reads this - https://www.cointalk.com/threads/coin-albums-holders-damaging-quality.314189/page-2#post-3046107

In that post I describe how coins should be properly stored.

The blue Whitman folders are arguably the worst. But pretty much all coin albums, old and new alike, and all kinds of albums not just the conventional cardboard type, are bad for coins. Sometimes they are bad because of the cardboard used to make them, other times they are bad because of the vinyl used to make them - all vinyl contains PVC plasticizers.

The one and only exception is if the album is labeled, described, or listed as being of archival quality. And very, very few are ! But even archival quality albums have their downsides. Some of them use the mylar slide covers - these can and will scratch coins as they are slid back and forth to add a new coin in the row or when one is removed. And with all albums you pretty much have to touch the coin in order to push it down into its hole. This can leave fingerprints on the coins, and if you use something to cover your fingers while doing this, it can and will at the least mar the surface and at the worst damage the luster.

Bottom line, coin albums are probably the worst thing ever invented for coins. In one way or another they are probably responsible for damaging and even destroying more coins than anything else !