Spanish Cob ? PLEASE HELP ! !

[HavenForest]

Nobody can seem to help me on this matter , so I joined this community hoping someone with some real knowledge on the subject could be of some help where I have been let down in all other attempts.

I have what I am almost certain is a Spanish 8reale coin set in a solid 14k yellow gold "bezel" mount.
Anything more than that I do not know.. And any I would be grateful for any further information...

Attached will be photos of both sides of said coin.
Thanks!

 

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[Mackaydon]

First guess: Coin from the "Concepcion" sunk in 1641.
Mexico City mint; assayer "P" 1634-1665
No size nor weight given by the OP--so use 27 grams for an 8R and half that for 4R
Don.......

 

[Baptiste Brown]

Have you tried to have it assayed?