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Isabella Quarter

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coinhop's Avatar
United States
53 Posts
 Posted 07/09/2008  03:27 am Show Profile   Bookmark this topic Add coinhop to your friends list Get a Link to this Message Number of Subscribers
I was quite pleased to come across this one in my grandfather's collection. Is that green on the rim of the obverse something to be concerned about (conservation-wise)?

I'm thinking AU-52. What do you think?

Isabella-Quarter

Isabella-Quarter

Note: The white streak and flecks on the reverse are artifacts of my scan, not anything on the coin.
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SeatedNut's Avatar
United States
2797 Posts
 Posted 07/09/2008  08:17 am  Show Profile   Bookmark this reply Add SeatedNut to your friends list Get a Link to this Reply
coinhop,

I'm thinking XF with the amount of wear and hit below the eye. Yes, that "green stuff" is a concern. It appears to be PVC residue ... a known coin killer. This happens when coins are stored in PVC holders. Before sending it off to a conservator, try immersion in 100% acetone. Acetone is non-reactive to metals, so it only removes surface contamination. Then rinse with distilled water and blow dry. Let us see an "after" picture.
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