If you really mean just dipped in something like Acetone, that would be almost impossible. If you mean dipping in some type of coin cleaning, that too depends on the extent of that dipping and the solution used. Then too, also depends on how long ago that dipping happened. Many coins were cleaned a long time ago as just normal. Since then most have taken on dirt, grit, crime, finger marks, etc making the previous cleaning or dipping difficult.
The main thing to look for as already noted is almost any coin that appears right from the Mint for luster and also shows wear just must have been dipped to make it look nicer for sale.
This becomes really a problem though with some really good coin cleaning people that know just how much dipping is not to noticable and then the usage of other products to make them look normal.
Posted 10/25/2009 2:09 pm
