Thats just not true. AT would be gassing a coin, baking it in the oven, applying heat sources, coloring it with chemicals or otherwise. Simply leaving a coin on a desk, putting it in a napkin, putting it in an album etc isnt actually AT thats letting nature do what it does. Whether or not the end result is market acceptable (which is all that matters) is a different story.
Many years ago, I received some Silver Eagles from a local club for speaking there are as door prizes. They were housed in holders that were made to hold them. Some of those coins toned in the holders in a way that some collectors like, which draw premium prices. The trouble is it’s only on one side. I have flipped them to see if the toning might work again. As for comments about “AT” and “NT,” I would consider this manilla envelope method to be NT. It was formed over a period of years from contact with the chemicals (sulfur) in the paper. That’s the way a number of “toners” have been made.
Please show your method. Never heard of this. I still don't believe that it seals them to prevent further toning.
You have a right to believe that ever you like. And I agree with you, that is why I said "with the intent".
I did not think you were trying to be. First I select the size flip I want to use. Then staple it . then label it. This is not a one way for all coins. Different coins can require more staples.
My bad I was thinking paper envelope then a flip or something of the sort. It's been a rough week. Didn't read your post that way. Did I say it's been a rough week. lol
Okay, for some reason, I've always called those "2x2's". To me, "flip" means a clear plastic holder with two pouches (confusingly, also 2" x 2"), and "envelope" means something that's paper with no plastic lining.