I must admit that this was the first time I cleaned coins for PVC damage. Different websites will mention dipping or soaking a coin in acetone or using a cotton swab and rolling it over the surface of the coin. What I realized is that if a coin is in brilliant UNC condition and untoned, it can be soaked or dipped in the acetone but if it is toned or has experienced circulation, the acetone will ruin the patina of the coin and detract from it's value. In this situation rolling a cotton swab would remove the PVC, which is generally on the relief on the coin, without cleaning the surface and thus preserve the coins value.
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