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postage
1956, Apr 3 1956 provisional issue unwmk (no perf info)
| - | 25F | balloon | — | — | ||
| - | 25F | airship Graf Zeppelin | — | — |
airmail
1949, Mar 5 Prince Albert I 100th issue
| - | 25F | blblk | Paleontological Institute in Paris |
1949, Dec 27 UPU 75th issue
| - | 25F | bl | globe & Palace of the Prince |
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