I've been using them since the 1950's when I first started collecting coins. They still serve the purpose they were intended for very well but have a couple of drawbacks. Larger coins like half dollars or silver dollars have a tendency to fall out and silver coins will tarnish after a certain amount of time because of the sulphur in the cardboard.
That’s when you want a Dansco, the folder with the coin “windows”, that allows you to see both sides of the coin.A disadvantage to folders is that they prevent you from viewing one side of the coin (usually the reverse). So there are some coins for which I prefer to use coin flips. But for the most part, I recommend folders as a simple way to organize a collection.
Some like myself use the 2x2 cardboard flips, which install into plastic sheets with pockets and fit into a three ring binder, really nice.Does anyone use those dark blue coin folders ? What else is everyone using to log/display their coins? I have all m old pennies and dimes from a kid and kiddo is showing interest. Thanks!