Philip IV Silver cob 4 REALES (1621-1665)   ** SPAIN PIRATE SHIPWRECK COIN **  Seville???
material :silver .931
14,58 gr

** THIS IS AUTHENTIC 17. CENTURY SHIPWRECK COIN ** 
for extra 50 $ you can get Certification of authenticity from archeological  museum from Republic of Serbia 

Around the world in 1,082 days | Penn Today
Wreck of 16th-Century Spanish Ship Found Off Florida Coast | Live Science
The hoard is found in Adriatic sea