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postage
1940, Jan 1 Chaco peace treaty issue unwmk (no perf info)
| - | 50p | grnbl | Herd |
airmail
1939, Nov airmail peace issue p. 12
| - | 50p | multi |
official
1939 University of Asuncion 50th issue p. 12x11.75
| X | 50p | org & blk | President Escobar & Doctor Zubizarreta |
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