1922-31 balance of a specialized collection, 17 covers and cards, with early (July) 1922 flights, registered cover from Moscow to Berlin, franked with single and block of six of the 45r overprint (C1), Moscow-Riga Deruluft cover, 1927 registered covers with 10k/5r variety (thin "0" in "10"), two Zeppelin cards Moscow-Berlin, 1927 card with 10k and 15k Congress, etc., scarce lot (Image)

Est.US$3,500