Most everyone knows not to try to clean any type of coins etc. I have a friend living in Laguna Bacalar, MX. He is a diver and has a cache of treasure from the area. Swords, coin, cannon balls, silver bowls, jewlery...he has a B.A. in some type of Historian mapping degree????? He has some very very old maps. He is planning a trip soon on a large catamaran he is renovating to follow some maps he has from ships that sank on there chartered voyages. Really intersting man. The history of that area is amazing. He finds most his treasure after big storms, I am sure he is busy now.

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