Help IDing this coin pendant

[spudster]

Hello everyone. New member here and I am hoping someone can give me some more info on this coin pendant. It is suppose to be a coin from a shipwreck and was purchased around 2011 at John Pennekamp State Park in Key Largo FL. Hopefully the pics are clear enough to be able to ID it. Thanks in advance for any assistance on this!

 

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[Mackaydon]

Welcome to Treasure Net !!
It's a replica coin of a 1697 4 reales Spanish coin.
Don.......

 

[spudster]

Not sure that it is a replica. There was a certificate with it that verified what it was and what ship it came from and the weight of the coin. Just that I no longer have that certificate. They had about 50 of them, none of them were the same and the price varied by size.