If you do choose to wear it, and I don't recommend one that nice, do not let it touch sweaty skin. The oils in your skin can effect the coin. Folks down my way commonly wear 8 reale cobs of the Atocha from the Mel Fisher collection. The value makes it dumb anyway. I'm waiting for my friend who has a Whydah from one of Blackbeard's ships to make a die from it.....will make authentic silver repros from it. That would be a nice necklace piece for sure. Anyhow, awesome find, welcome to the Spanish silver club!