Stamps of Egypt, 30 Dec 1978
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postage
1978, Dec 30 75th Anniversary of Helwan Observatory issue wmk. arms mult p. 11x11.25
| - | 20m | multi | Kottamia Astronomical Observatory |
airmail
1978, Dec 30 75th Anniversary of First Powered Flight issue (no perf info)
| - | 140m | multi |
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