Cob Identification

[Gitschlag]

What can y'all tell me about this piece? It weighs in a little under an ounce, supposedely a sea salvaged piece. Thanks fellas!

 

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[Mackaydon]

Looks like a typical 8 reales coin from the Atocha (sunk in 1622); Mexican, assayer "D" 1618-1634.
Don...

 

[Gitschlag]

Thank you for that prompt infornation, Don!