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postage
1957, Feb 14 1957 surcharges issue ovpted unwmk (no perf info)
| X | 300b on 1.40b | blvio & blk | communications building |
1960, Dec 17 1960 provisional issue ovpted (no wmk info)
| - | 300b on 5c | Sun Gate |
airmail
1954, Aug 2 1st National Agronomical Congress issue unwmk
| - | 300b | map of Bolivia & Bolivian |
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