A Little Help From My Friends .

T-bob: my numistmatic heart goes out to you. That's a similar tragedy to stamp collectors who find out that their saving procedures resulted in panes of stamps stuck together like plywood.

I use silica gel pacs also-any clue on the shelf life of these? Ive heard conflicting answers in the past from people

I would think that would be one reason as to why they toned. You don't know how they where handled prior to you getting them. Using acetone will remove the oils left behind from someone touching them (not patina or toning).

Unless you have a temperature controlled room you should definitely keep coins stored in a way to protect from humidity. The zip-lock bags with silica is the way to go in my opinion. I only use the silica with the indicator on it so I know when it is time to recharge them. Storing the coins in anything wood without this layer of protection is a big no no to me. Wood absorbs moisture and releases it unless it is sealed, but then you would have to consider the type of sealant used. Keeping coins in 2x2's only protects them from getting minor scratches and being physically handled.

You not only have to protect your coins from the elements but also from what you use to protect your coins. It's a vicious cycle.

Thanks for the warning - I'll check and make sure this doesn't affect my collection.