Removal Of Verdigris IHC's

Really need more info. Just what do you call Verdigris? How badly is the coin corroded? What color is the contamination? Could really use a photo of the coin. Some call Verdigris anything on a coin that is not part of the original coin. Some coins are so pitted that nothing on Earth will help. Also, depending on the date of the coin possibly nothing should be attempted unless you really know what your doing. If a valuable date, you could ruin the coin and really lower it's value. If a really common date, such as 1907 with over a hundred million made, the cost of purchasing some special solutions could well outdo the value of the coin. If a really well coin to begin with, that too could make any attempt to fix just a waste of money and time.

Verdigris is a tricky problem. I hope to have my book done soon as I think it will help a lot of collectors to understand verdigris.

Be aware that if the verdigris is severe, there will be surface damage. Often the removal process will lessen the details on the coin since the verdigris actually becomes part of the design.

If you choose conservation, VERDI-GONE™ is only effective on light to moderate verdigris. It absolutely will not touch severe verdigris, just as the product is designed.

Small pictures...but it looks like it will be OK. The obverse appears to be light and the reverse exhibits moderate verdigris. There might be some pitting under the reverse verdigris, it depends on the thickness.

Carl with right, you have to very careful here or you'll find yourself cleaning instead of conserving the coin. If you have doubt, leave the job to a professional. A warm distilled water bath will certainly not hurt the coin....but be careful.