Here's a half pagoda, Madras Presidency, 1808-1811, that I've had since the 1980s, purchased from Karl Stephens. These coins were struck over...
Your coin looks as if it has typical hard green deposits. I have many ancients with these spots. I don't think that is bronze disease. Active...
Did the black deposit come off in the acetone or when you rinsed in distilled water? Water is actually an effective solvent for some deposits.
That's a very nice example! You might have an overdate (8/7), but I can't say for sure, given the image. I think I see the bottom of the 7...
FYI, here's an 8 reales cob, 1626, Potosi, Philip IV: [ATTACH]
Separate names with a comma.
