ive seen a lot of peace dollars toned similar to the one you showed us. overall this coin didn't look suspicious to me.
Toning is often caused by certain gases that are emitted from paper, or from combustion (cigarettes/coal/gas), or foods. People have toned coins in slabs by treating them with those gases -- slabs are not air-tight. As Rob said, though, it's tricky to get a result that isn't ugly.
Well, I asked that question because I think you have seen that many Peace dollars with at least similar color patterns, and similar colors in some cases, over the years and right here on this forum. Now I'll grant ya, you pretty much say the same thing every time - one of those being that you've never seen it before. You've even said that you've never seen a Peace with toning covering an entire side - but you've seen that too, and more than once. In fact you owned one yourself at one time where one side was completely toned. Now I could go on searching and probably find quite a few more examples Paul but here's a few threads that illustrate what I mean. https://www.cointalk.com/threads/straight-vs-psuedo-axial.364972/#post-4740480 https://www.cointalk.com/threads/what-do-you-think-fo-this-peace-monster-at-or-nt.358656/ https://www.cointalk.com/threads/opinions-on-this-1922-d-toned-peace-dollar.320984/ https://www.cointalk.com/threads/the-toning-premium-thread-part-2.299570/page-336 As for me, over the years I've seen way more than 10 Peace dollars with toning that covered an entire side, and some both sides, and in a wide range of the mix of colors. Now granted, it's not nearly as common as it with other coins. But it does happen, always has happened. And in many cases the TPGs grade them cleanly, in other cases they don't. And in yet other cases they'll not assign a clean grade one time and then will assign a clean grade the next time that same coin is re-submitted. Now I'm not debating the point as to whether it's AT or NT in any of the cases. Nor am I looking for a debate on anything. I'm merely pointing out that there are way more than a few Peace dollars with toning that covers entire sides and in a multitude of colors, some of them similar to the colors of this coin, depending on which pic of it you look at of course. And that have appeared over a rather long period of years. And you've seen a great many of them yourself. And in a few cases, you've even agreed that they were NT.
FALSE, I have never seen a Peace Dollar with bright green toning and pink & peach at the center. It seems obvious to me that we have different definitions for the word "similar." My responses are consistent because they are truthful. Furthermore, when did I ever say that I had never seen a Peace Dollar with toning covering an entire side? Unlike most of the respondents of this thread, I actually attempted to assemble a rainbow toned Peace Dollar collection. Now why would I claim that I had never seen a Peace Dollar with 100% toning coverage on one side when I owned one. That makes no sense at all Doug. To jog your memory, the coin in question is shown below. The only Peace Dollar in those links that even comes close to resembling the coin shown in this thread is the 3rd link, and NGC deemed that coin artificially toned. Again, I never said that Peace Dollars couldn't have 100% toning coverage. My problem with the subject coin in this thread is that the coin has what appears to be bright green toning dominating the obverse with pink at the centers. That color scheme is atypical for the Peace Dollar series and based on my judgement, the coin in question is AT and should not reside in a problem free holder. I can count the number of Peace Dollars I have seen with a majority of green toning on one hand. The color of the green is almost exclusively emerald green, not the pastel green seen on this coin, and it is usually intermingled with the other colors as is the green on the coin I showed above. That coin shows a color scheme and toning pattern that is consistent with storage in a coin folder for many years where the entire reverse is in constant contact with the sulfur laden paper source and the obverse only has contact at the rims. The result is that the reverse is 100% toned in deep colors while the obverse only has moderate toning emanating from the rims. So what is the explanation of the subject of this thread? The coin is completely toned on both sides. That eliminates folder toning, bag toning, and EOR toning. The only thing left is envelope toning which doesn't create rainbow waves and target toning caused by storage in an album. Now the obverse of this coin mimics target toning at first glance but the color scheme is wrong, the color progressions are wrong, and the reverse toning doesn't resemble target toning at all. And what is the demarcation line at the top of the obverse through LIBERTY where the toning all of a sudden goes from the green color back to shades of light blue and pink? How would a target toned album toned coin have a less toned area at the rims than towards the centers? And when the toning itself raises this many questions, then the toning itself has become questionable. Btw, the whole purpose of this thread is to discuss the originality of the toning, the AT vs NT debate. If you are here to point out that Peace Dollars are capable of having 100% toning coverage on a side, then thank you, Captain Obvious.