Los 307
Charles Lindbergh, Survey flight Holstenborg via Godthaab to Reykjavik, picture postcard with special with multi-colored vignette "GRØNLANDERIN DERS-UDDANNELSE" and two line cachcet "LINDBERGH POST GRØNLAND REYJKAVIK" and "GRØNLAND SRYRELSE", scarce, very fine, Nielsen certificate (Lüning 5A1)
