I just bought a wonderful Alexandrian Drachm from Vcoins that had undescribed bronze disease. It's quite apparent in person but isn't visible at all in the photographs (it's taken root in several cracks around the edge of the flan, and mainly visible when looked at edge-on). I know that given vcoins return policy I'm well within my rights to request a return. However, other than the bronze disease, I really like the coin and would like to keep it. So: 1) Do you think it's reasonable for me to request a partial refund from the dealer, and what percent of the total do you think is appropriate? (For context the coin cost about $250) 2) I'm a bit leery of tackling the corrosion myself. Are there any professionals who you have worked with who would be willing and able to treat it? (paid of course) Thanks for your replies!