Green Stuff? - Coin Community Forum

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Author	Replies: 4 / Views: 1,104
drpepper Valued Member United States 96 Posts	Posted 04/09/2007 09:38 am I recently pulled out a box of coins I had not looked at in a few years. I noticed that on a Franklin half and a couple of my eisenhauer dollars there was a green film on parts of the coin. I assume that this is a type of mold growth or tarnish possibly caused by moisture. They are stored in plastic flip open holders and in a small latched wooden box. I did have them in a basment for awhile. What is the best way to keep this from happening? I would rather not invest in airtight holders because these coins are not of high value. Doc Report this Post to the Staff

trdhrdr007 Pillar of the Community United States 2335 Posts	Posted 04/09/2007 09:43 am It sounds like you might have the coins stored in flips that contain PVC. PVC will create a green slime on the coins over time. Report this Post to the Staff
drpepper Valued Member United States 96 Posts	Posted 04/09/2007 09:54 am That seems possible. It looks like the green is on the high parts of the coins only, and the holders were mighty cheap and not from a reliable source. I have been in the process of switching to the standard cardboard holders. Report this Post to the Staff
Phoenix21 Valued Member United States 194 Posts	Posted 04/09/2007 5:39 pm Phoenix Report this Post to the Staff
SsuperDdave Moderator United States 23522 Posts	Posted 04/09/2007 7:38 pm Get them into acetone. Do a search on this forum for that term; there are a few threads where acetone's safe and proper use is described. PVC damage is irreversible after a certain point, and will permanently disfigure silver coins if allowed to progress. Report this Post to the Staff
	Replies: 4 / Views: 1,104

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