Airmail Covers

Quality: ✉

1937 PA 7 and PA 10 “50c. green” and “3fr. reddish-brown” airmail stamps on an envelope (damaged) for an international money order, franked on 15 January 1937 to Brussels; as the item was postage-free, only the airmail fee was paid, i.e., “3.50fr.” for 5gr. (rate valid until 31 March 1937); on the reverse, “BRUXELLES 1A/20 I 1937”; rare item, very good condition, very fine/to be checked