Coin pages and three ring binders

I recommend that you do not use acetone on copper, use xylene on copper. But acetone is perfectly fine on ALL other coins. You'll find instructions in here about how to use it properly -
https://www.cointalk.com/threads/proper-acetone-procedure.193708/

As for your question about "cleaned", well, you first have to understand what that term really means. Ya see, there is "cleaned", and then there is "harshly cleaned". Cleaned is good, harshly cleaned is bad. You can say it a hundred different ways but that's the bottom line.

The problem is this. When most people say cleaned in the course of normal conversation, what they really mean to say is harshly cleaned. In other words they use the terms incorrectly.

There are 4 things that you can use to properly clean a coin - without doing any harm to the coin. They are, distilled water, acetone, xylene, and coin dip. And it doesn't matter which of these you use, none of them will be considered as harsh cleaning IF you use them properly !

But if you use them improperly, that can change.