Hi and sorry for the poor image (if anyone has tips on how best to photograph through two layers of plastic please advise) This half is in an ICCS flip and is graded MS-63. The black dots you see are on the coin, the Queens face has scratches, and the part that looks gray in the photo is yellowish in real life. Wondering if this was thumbed before grading and then time did it's thing? It's an older flip.Only paid 13 bucks for it so not griping, just wondering how it got graded so high? Flip hasn't been tampered with from what I could tell. Many thanks
That will not dip off . It is the dreaded yellowish skin " cancer " . Very common on Canadian silver coins of the 1950 To 1967 era. This coin is an excellent example of Technical grading at its worst. PCGS or NGC would have no Graded as environmental damage and body bagged it. Why on earth anyone would have submitted that piece is way beyond me. You could easily find a nicer raw example in a dealers melt silver bucket.
Then you partially answered your own question, in mentioning others have it . It is a yellowish or pasty off white colour sometimes associated with black spots. Improper blank preparation before striking is one theory . It cannot ever be fully removed . Some years appear to be more prone than others. 1957 , 1962 , and 1963 halves come to mind as being prone to " Silver Cancer". A similar effect known as " Milk Spots" , first associated with US Peace Silver Dollars, and commonly found on Canadian Maple Leafs and US Silver eagles occurs today.. they also fall into the same category as the above noted condition.
Just looking at my 50 cent pieces today - not too many are yellow like this but I saw a number with green spots - look almost like mold. I assume that this is a different type of "coin cancer" - a reaction to the 20% copper in the coin?
Thanks Pacificcoin, Is it something that appears later on in a coins life? Is it possible it wasn't there five or so years ago when it appears the coin was certified? Otherwise, why wouldn't they note it? I have a 63 dollaar that has it just as bad.
Coin 197,I have a bunch of silver maples, still in the plastic film pouches, that have ugly white spots all over them. Since I'm keeping them strictly as bullion their appearance is of little importance. But geez they sure are ugly.
aghawk, how are you storing your coins? Some plastics contain a matter called PVC, a substance that will turn into a residue and basically turn you coins into this: https://www.google.ca/search?hl=en&....Ou8TeWSmmmo
Get some acetone and do this:
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Posted 02/11/2017 5:01 pm
I can't help with the grading, but the edit feature is the little page icon with the pencil above your post
