p231a: 20 Colones from 1964

11.11.1964-30.6.1970. Brown on multicolored underprint. Portrait of Picado at center. Back brown; University building at center. Series B. Printer: TDLR.

• Country & Pick Number:Costa Rica p231a
• Denomination & Currency:20 Colones
• First Year of Issue:1964
• Issue Type: Regular Issue