Identify a 8 reales cob

[Who's the boss]

Hello my friends !!!
One of my friends have found this cob.
Can you help me to identify it. Is it spanish coin,bolivia coin...
How to clean it? Or maybe you think it's better not to clean it !
Thinks and happy hunting


P.S: Excuse me for my bad english...

 

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[stevemc]

Definitly a Spanish 8 Reale, looks like 1792, hard to see. Ferdinand the 6th. Good shape. That is really a milled coin, not a cob, which are pounded by hand. That is made with a machine, similar to how they are made now. Oh, and your english is perfect. And dont clean it, at this point. It looks good, and has some corrosion, but cleaning it too much would hurt its value. Maybe just soak it in fresh water and let it dry.

 

[Mackaydon]

Mexico City mint.
Fernando VI's reign (1746-1759)
Manuel de León and Manuel Assorín, assayers ('MM')
The MM assayers' mark on the 8-reales coins were seen between 1754 and 1760.
The columns are topped with both imperial and royal crowns.
39mm and about 27 grams
5s looked like 9s.
Don.......