Argentina Scott #1056 FIRST DAY COVER Space Monsters Painting $$ 378229
Argentina Scott #1234 FIRST DAY COVER Satellite Communication $$ 378226
Argentina Scott #1261 FIRST DAY COVER ITU Regional Conference 1980 $$ 378210
Argentina Scott #1265-1267 FIRST DAY COVERS Satellite Communications $$ 378218
Argentina Scott #1265-1267 FIRST DAY COVERS Satellite Communications $$ 378228
Argentina Scott #677 FIRST DAY COVER Int'l Geophysical Year IGY $$ 378208
Argentina Scott #772-C99 FIRST DAY COVER Symposium on Space Research $$ 378238
Argentina Scott #902//C115 FIRST DAY COVER Communication INTELSAT $$ 378216
Argentina Scott #902//C115 FIRST DAY COVER Communication INTELSAT $$ 378217
Argentina Scott #977 FIRST DAY COVER National Meteorological Service $$ 378212
Argentina Scott #977 FIRST DAY COVER National Meteorological Service $$ 378214
Argentina Scott #B69-B72 FIRST DAY COVER Communication Plane Ship $$ 378221
Argentina Scott #B69-B72 FIRST DAY COVER Communication Plane Ships $$ 378219
Argentina Scott #B69-B72 FIRST DAY COVERS Communication Plane Ship $$ 378220
Argentina Scott #C105 FIRST DAY COVER Argentina and Antarctica $$ 378222
Argentina Scott #C132 FIRST DAY COVER Buenos Aires Planetarium $$ 378211