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postage
1892 1892a issue blue lines paper wmk. CORREOS E U M p. 11
| X | 4c | org | numeral | — | — |
airmail
1966, Nov 4 20th Anniversary of UNESCO issue wmk. MEX & eagle
| - | 80c | multi | ||||
| - | 80c | multi | Perf: 10½ | |||
| - | 80c | multi | Perf: 11 x 10½ | |||
| - | 80c | multi | Perf: 10½ x 11 |
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