p51o: 500 Pesos from 1972

27.6.1972. Black on multicolor underprint. Like p43 but without No. above serial number. Middle signature title: INTERVENTOR DE LA COM. NAC. BANCARIA. Signature varieties. Back: Green. Palace of Mining at center. Printer: ABNC. Series: BLI-Blight.

• Country & Pick Number:Mexico p51o
• Denomination & Currency:500 Pesos
• First Year of Issue:1972
• Issue Type: Regular Issue