Help! Is This Natural Toning (I Hope So) Or Damaging PVC Stains?

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Author	Replies: 8 / Views: 1,051
Coins Mania Valued Member Singapore 151 Posts	Posted 02/22/2022 9:31 pm This coin was stored in 2X2 cardboard Mylar for 2 years. Recently I notice the stain is more obvious than it was 2 years ago. I had soaked the coin with pure Acetone, rinse with distilled water ensured air dried prior to placing into the 2x2. Is it the harmful PVC or natural toning? I hope there is no sign of corrosion on the coin. When I remove the coin out from the 2X2 there is no gluey substance on the coin and the mylar did not stick to the coin. Those stain area does not feel particularly sticky too. Below attached is closed up image of the coin. The reverse looks slightly cleaner If that's PVC what remedy can I do? Kindly advise Thanks Report this Post to the Staff

Coinfrog Bedrock of the Community United States 94367 Posts	Posted 02/22/2022 10:40 pm I'll say high VG details (obviously cleaned). Report this Post to the Staff
bugil46 Pillar of the Community United States 579 Posts	Posted 02/23/2022 05:35 am Yep Cleaned with no luster left. Sad. Report this Post to the Staff
Seeker55 Pillar of the Community United States 634 Posts	Posted 02/23/2022 08:09 am The greenish tinge could well be traces of PVC residue. You can try soaking the coin in acetone to remove these; it will not harm the coin. Report this Post to the Staff
ijn1944 Bedrock of the Community United States 19122 Posts	Posted 02/23/2022 08:18 am Yes, a long soak in 100% acetone might reduce or eliminate the discoloration. Unfortunate that the coin was cleaned earlier. Report this Post to the Staff
Coins Mania Valued Member Singapore 151 Posts	Posted 02/23/2022 9:35 pm @Seeker55 and ijn1944 thanks for the reply. I wonder do I need to rinse the coin with distilled water after soaking it in Acetone? Or we can rinse with new Acetone then leave it to dry? By the way Acetone drys very fast. The distilled water is bottled in plastic which may not be too good an idea. Report this Post to the Staff
jimbucks Pillar of the Community United States 4691 Posts	Posted 02/23/2022 10:37 pm Rinse with distilled water. Report this Post to the Staff
machine20 Pillar of the Community United States 1272 Posts	Posted 02/25/2022 9:38 pm It looks like it's just retoning after being dipped Report this Post to the Staff
Coins Mania Valued Member Singapore 151 Posts	Posted 02/27/2022 12:40 am @machine20 Hmmm... Possible Toning can be green? Report this Post to the Staff
	Replies: 8 / Views: 1,051

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