why is this the only coin in the set that is discoloring like this. will this keep getting worse and worse and will it spread to my franklin if i leave it in the case? thanks.
It's just toning, probably because of how it was stored before it found it's way into that holder. You would be lucky if it spread to the rest of the coins, many collectors will pay a high premium on a nicely toned coin.
More likely, when that set was removed from the OGP cellowraps and placed in that holder, it was exposed to elements that causes silver to tarnish(collectors call toning). As far as the other coins being affected by this, it could happen to them as well.
IT would increase the value to many collectors such as myself But toning is completely a preference thing. Just more people like it then dislike it.
Ugly black toning is a turn off to most (if not all) collectors. Colorful toning is quite popular with many collectors and a pleasingly colored specimen can cost a few bucks more in comparison to it's blast white brothers and sisters.....
in time, that coin will probably turn rainbow as it is still is in the 1st cycle of toning (tan, russet) If you don't want it, an dip in acetone may help.
no, i like the way it looks. even more so now that i know it is not really damaging the coins. i posted the nickle from the same set and it is a really attractive blue and orange.
so i have about 60 1979 and 1980 susan b anthony cameo mint proof sets i just checked for the first time and all the SBAS are either blue, purple, rainbow, or gold.
I prefer untoned proofs but any business strike coin that is naturally toned is fine with me. So a little bit of both here.
Really? A dip in acetone will remove toning on a silver coin? News to me. If the toning on a silver coin is genuine, an acetone dip should have no effect. Numis-addict, http://www.jhonecash.com/research/
Toning is an active process and unless the coin is stored properly, it could continue. If you really like how the coin looks now, I suggest storing it carefully if you don't want to colors to progress further.
That Dime is only slightly toned. Wait until it gets more colors on it the eye appeal and value will rise but it may take a few years. But if you don't want it to tone further take the coin out and put it in an airtite holder. It will slow down the toning.
The colors seen in toning are produced mainly by thin film interference of the chemical deposits ( actually corrosion layers ) responsible. The below url and the urls referenced inside of it does the best job I know as a reference to explain toning colors and progression. http://forums.collectors.com/messageview.cfm?catid=26&threadid=716279
No it wont, but if there is something on the coin that is causing the toning the acetone dip may stop it from progressing.
