I recently acquired a verdi gris clad Antoninus, after cleaning of the verdi gris ...da da da... copper was revealed underneath, therefor it was clearly dipped, was this a common occurrence in roman times, or is my coin some kind of numismatic rarity? thanks guys, any suggestions...ps the coin weighs less than a denarius...
I can not upload pics due to file size limits ...but there are clear signs of delamination under microscopy....