I found what looks like an old silver reale but dont really know. I cant find out anything online about it
Look like a modern copy of an old Spanish coin i doubt its silver and sadly not worth anything really.
you might check with Sedwick Coins. He specializes in early Spanish cobs and coins. Shipwreck Coins and Artifacts of all Nations - Spanish Colonial & Latin American Coins by Daniel Frank Sedwick, LLC (sedwickcoins.com)