Probably not after opening, but leaving it open might degrade it. Light and/or heat will assist the degradation.
BTW, there is no chemical reaction with acetone. That is why it is safe to use. It dissolves grease allowing the dirt to come off and it...
Legal, probably yes. But it is against eBay rules, but that does not seem to matter anymore either....
Your pictures make it look like it has been cleaned, but, yes, it appears to be a woody. BTW, is that coin rotation or medal rotation?
Here is one I got cheap. I fully realize it is not a 68, but it did not cost even 1% of a 68 either. [ATTACH] [ATTACH] [ATTACH]
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There are a lot of real nice Lincolns out there for $10 to $15. Most Lincolns wheats 1937 to 1958 in MS66 can be had for less than $20 in NGC or...
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I can't read your luster, but the strike should hold it back. 63 or maybe even a 62.
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Maybe this will add some perspective; And he still has the $10,000.
I think you will find that the general consensus is that there are no 1917 proof Lincolns and the coin pictured above is not a proof. And I mean...
That is the same coin NGC uses as their picture for that variety. Enjoy it!
FWIW, it did not sell. I wonder why! But it got relisted as...
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Oh! No, I would love to have it in my collection, but that does not mean I like the colors. It just means I am presently missing that coin in...
My first impression of that coin was it is AT. I was surprised to find it was slabbed.
I agree with the 65.
Here is an 1836 PCGS 50 (courtesy Heritage) and I think yours is at least comparable to it. Cleaning would not surprise me, but I cannot tell for...
Heavens, it is hard not to post them here. You can even copy and paste them here. [ATTACH]
Separate names with a comma.