Soak it in the purest acetone you can find at the hardware store. I can't tell what it is based on your pics, but acetone will remove the PVC if it's there.
a common sense answer is that any friction on the surface of an original mint state coin will remove luster. if a material truly bonds to the layer that forms the surface luster, when it is removed the original surface would be damaged in different degrees depending on the situation.
i guess the key is to get it removed properly early in the process.
The second pic looks like PVC. Better to remove it now and live with the surface than to let it get worse.
Pure acetone, use a jar with a lid that can be screwed on tight and let it soak for as long as needed. Acetone will evaporate in minutes unless it's sealed.
You may want to swirl it around a bit every so often.
I've had a very nice old Walker, MS 65-66 quality, soaking for 3 weeks now and it's slowly lifting away the PVC that was creeping into the reeded edge. So far the surace appears to have not suffered at all, if that helps any.
Looks like machine doubling as well. It's worth a few bucks for the acetone and an old food jar and a few weeks if needed to give it a try. Just don't use any type of tool, even a toothpick, to attempt to hasten the process. It may come off in less than 24 hours, just depends on how long it's been there.
Good luck.
"Lenin is certainly right. There is no subtler or more severe means of overturning the existing basis of society(destroy capitalism) than to debauch the currency. The process engages all the hidden forces of economic law on the side of destruction, and it does it in a manner which not one man in a million is able to diagnose." John Marnard Keynes, The Economic Consequences of the Peace, 1920, page 235ff
Thank you for the reply , i did a one hour soak and not much happened , three hours a little better so i let it soak overnite and thats were the greenish color came out on pic. #667.jpg . I learned alot for the three dips i did and wanted to make sure with you that it was ok. With the date i think its machine doubling but that nine sure looks funny on the right .
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a common sense answer is that any friction on the surface
of an original mint state coin will remove luster. if a material
truly bonds to the layer that forms the surface luster, when it
is removed the original surface would be damaged in different
degrees depending on the situation.
i guess the key is to get it removed properly early in the process.
bump
Pure acetone, use a jar with a lid that can be screwed on tight and let it soak for as long as needed. Acetone will evaporate in minutes unless it's sealed.
You may want to swirl it around a bit every so often.
I've had a very nice old Walker, MS 65-66 quality, soaking for 3 weeks now and it's slowly lifting away the PVC that was creeping into the reeded edge. So far the surace appears to have not suffered at all, if that helps any.
Looks like machine doubling as well. It's worth a few bucks for the acetone and an old food jar and a few weeks if needed to give it a try. Just don't use any type of tool, even a toothpick, to attempt to hasten the process. It may come off in less than 24 hours, just depends on how long it's been there.
Good luck.
John Marnard Keynes, The Economic Consequences of the Peace, 1920, page 235ff
the greenish color came out on pic. #667.jpg . I learned alot for the three dips i did and wanted to make sure with you that it was ok.
With the date i think its machine doubling but that nine sure looks funny on the right .