Airmail Covers

Quality: ✉

1938 N° 173 (2x) “50c. violet,” indigenous scenes, and N° 187, “1.50fr. lilac-brown,” 50-cent stamp on a letter from Leopoldville posted on 11 February 1938 to Vienna, Austria; blue cancellation from Leopoldville – Kalina, rare, correctly franked at “2.50fr.”, very fine