1953, Panama (Republic). Beautiful Silver 1/2 Balboa Coin. Lustre AU-UNC! Mint Year: 1953 Reference: KM-20. Denomination: 1/2 Balboa Condition: Lustre AU-UNC! Material: Silver (.900) Weight: 12.57gm Diameter: 30mm Vasco Nunez de Balboa (c. 1475 – January 15, 1519) was a Spanish explorer, governor, and conquistador. He is best known for having crossed the Isthmus of Panama to t ...