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airmail
1948, May 15 1948 air issue - explorers & inventors wmk. double cross in shield mult p. 12
| - | 6f | grn | Graf Zeppelin David Schwarz dirigible airship |
airmail semipostal
1948, Oct 16 1948 air semi issue - explorers & inventors p. 12x12.5
| - | 6f | bl | Victor Hugo 1802-1885 Quasimodo |
postage due
1953, Aug 8 1953 due issue wmk. stars (Cuba) p. 15
| - | 6f | graygrn & blk |
1958, Mar 1 1958 due issue
| - | 6f | orgred & blk |
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