Is it stubborn PVC?
claychaser
Posts: 4,406 ✭✭✭✭
I've had some stuff that I haven't looked at in 20 years. Some of it was bought in PVC holders in 1978-81 time frame. I have discovered slime starting on the rims on Unc 70-D Kennedys, and it came right off with acetone followed by a dip in 92% alcohol.
I had some low value 2 cent pieces, and it came right off with no changes other than the green stuff being gone to the coin visible under 8 power hand magnifier.
I am having trouble with an 1807 bust half. Nice piece, VG - Fine or so. It had green slime starting at the letters and high points of Liberty's neck, and almost all of it came off on the first bath in acetone. I changed out the acetone, and bathed again for 2 hours, then again. I still can see some green next to the reverse stars, and inside some of the letters. So far, no damage noted to the metal. I'm using a 3rd bath of new acetone tonight.
Should I just be patient and let it bath for a few days, or try to puch the stuff off with a q-tip or cotton ball? Or, should I try kerosene or Koinsolv?
I had some low value 2 cent pieces, and it came right off with no changes other than the green stuff being gone to the coin visible under 8 power hand magnifier.
I am having trouble with an 1807 bust half. Nice piece, VG - Fine or so. It had green slime starting at the letters and high points of Liberty's neck, and almost all of it came off on the first bath in acetone. I changed out the acetone, and bathed again for 2 hours, then again. I still can see some green next to the reverse stars, and inside some of the letters. So far, no damage noted to the metal. I'm using a 3rd bath of new acetone tonight.
Should I just be patient and let it bath for a few days, or try to puch the stuff off with a q-tip or cotton ball? Or, should I try kerosene or Koinsolv?
==Looking for pre WW2 Commems in PCGS Rattler holders, 1851-O Three Cent Silvers in all grades
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