Airmail cover with Canarias overprints to Zaragoza, 1937
Reference: C11439
Registered airmail cover from Las Palmas de Gran Canaria to Zaragoza, with postmark dated on May 30, 1937. Airmail overprints Edifil 14, 15, 16 (x2) 18 and complete set 20(x2)-22. Zaragoza arrival backstamp.