Stamps of El Salvador, Industrial Development issue
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postage
1977, Jun 29 Industrial Development issue unwmk (no perf info) (7 stamps)
| - | 10c | multi | Central Hidroeléctrica Cerrón Grande | |||
| - | 10c | multi | Sugarfactory nearby JIBOA | |||
| - | 15c | multi | Central sugar refinery | |||
| - | 25c | multi | ||||
| - | 30c | multi | Estación Terrena Izalco | |||
| - | 50c | multi | ||||
| - | 75c | multi |
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