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Pioneer Flight Covers November 2, 1933, General Air Post Service, 50L-50D, complete set of seven, used in the First Day of issue on FFC from Athens to Jannina, together with 80L blue and black (on reverse), violet confirmation cachet and Jannina "3.11.33" arrival ds, VF, about 70 covers were flown
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| Scott # C15-21