This is a museum quality model Atocha coin as

found on the famous shipwreck

 Nuestra Senora De Atocha of 1622

The coin was casted with a portion of silver recovered from the shipwreck

Solid Sterling Silver with 14K Yellow Gold Overlay Conch Frame set with a 2 Reale Coin

 Comes with a certificate of authenticity and a gift pouch

Dimensions:  2.2 cm (not including bale) approx. size of a nickel