| Issuer: Portugal
Date: 6/24/1986 (1986 sheets) INCOMPLETE Block 1 (0, 0 x 0) 0, 0: 100.00e d=Halley's Comet |
External links: Colnect 69060-..-Halleys_Comet Record of changes |
| Issuer: Portugal
Date: 6/24/1986 (1986 sheets) INCOMPLETE Block 1 (0, 0 x 0) 0, 0: 100.00e d=Halley's Comet |
External links: Colnect 69060-..-Halleys_Comet Record of changes |
