Hi I aquired this coin in a lot of Roman coins. I collect Roman coins and believe the coins came from Spain.I am not sure how this coin was mixed in but I did some research and believe it is a Mexico city coin from the 1500,s Phillip II. the coin weighs 26.4 grams and is 36mm. If anyone has any more info on it that would be great.It isn't corroded so I don't believe it came from the water. thanks Joe
The mint mark is oMO