Stamps, 20 May 1971
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Bhutan
postage1971, May 20 automobiles (1971) unwmk (no perf info) (20 stamps)
| - | 2ch | multi | Mercedes-Benz | |||
| - | 5ch | multi | ||||
| - | 10ch | multi | ||||
| - | 15ch | multi | ||||
| - | 20ch | multi | ||||
| - | 30ch | multi | ||||
| - | 60ch | multi | ||||
| - | 75ch | — | — | |||
| - | 85ch | — | — | |||
| - | 1nu | — | — | |||
| - | 1.20nu | — | — | |||
| - | 1.55nu | — | — | |||
| - | 1.80nu | — | — | |||
| - | 2nu | — | — | |||
| - | 2.50nu | — | — | |||
| - | 4nu | — | — | |||
| - | 6nu | — | — | |||
| - | 7nu | — | — | |||
| - | 9nu | — | — | |||
| - | 10nu | — | — |
Iran
1971, May 20 rehabilitation of prisoners week issue wmk. arms of Iran in circle p. 10.5
| - | 6r | multi | ||||
| - | 8r | multi |
Bulgaria
1971, May 20 100th Birthday of Panaiot Pipkov issue unwmk p. 12.5
| X | 13s | multi | Panayot Pipkov | |||
| - | 13s | multi | Color Dark Green missing | — | — |
1971, May 20 International Year against Racial Discrimination issue p. 12.75
| - | 13s | multi | People of different Races Emblem |
China, ROC
1971, May 20 10th Anniversary of Sino-African Technical Co-operation Committee issue (no perf info)
| - | $1 | multi | ||||
| - | $8 | multi |
Democratic Republic of the Congo
1971, May 20
| X | 4k | multi | obelisk at N'sele |
Colombia
1971, May 20 400th Anniversary of Guacari issue p. 14x13.75
| - | 1.10p | multi |
Poland
1971, May 20 UNICEF 25th issue p. 9-14.5 (8 stamps)
Liberia
1971, May 20 Apollo 14 issue (no perf info) (7 stamps)
Saudi Arabia
1971, May 20 World Telecommunications Day 1971 issue (no wmk info)
| - | 4pia | ltbl & blk | .20 | |||
| - | 10pia | ltgray & blk |
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