This is a museum quality model coin as found on famous shipwrecks as the 

 Nuestra Senora De Atocha of 1622

The coin casted with frame using portion of silver recovered from an actual bar from the shipwreck

Era 1600-1700

Sterling Silver  frame clad  in 14k yellow gold with Silver Coin 

 It comes with a certificate of authenticity and a velvet gift pouch

Dimensions: approx. 2.6 cm (not including bale) approx. size of a quarter