Airmail Covers

Quality: ✉

1937 PA 5 (2x) and PA 12 “15fr. sepia” and “5fr. brown-yellow” airmail stamps on an envelope for an international postal money order sent from Stanleyville on 20 March 1937 to Brussels; as the item was postage-free, only the airmail charge of “35fr.” was paid; handwritten notation “50gr.” (charge in force until 31 March 1937, of “3.50fr.” per 5gr.) on the reverse; cancellation “BRUXELLES 1N/27 1937”; rare item, very fine