1928 (13 Sep) Austria Vienna - Berlin - Moscow - Tashkent then back to the sender, Expres Airmail Registered cover, flights Vienna - Berlin, Berlin - Moscow, Moscow - Tashkent (Postage due was placed by mistake, Muller 147 (Austria), 353 (Germany), 36 (USSR) CV $1,600)

From ex Dr. Peter Moeller collection that received the Large Gold Medal at the Hannover 2011 Exhibition.

Berlin - Moscow - Tashkent/Uzbekistan
For the airmail to Tashkent there is since 1.6.1930 connection in Moscow to the DERULUFT connection

Vienna-Berlin-Moscow-Tashkent

As of 21.11.1934 airmail connection from Vienna to Berlin for Deruluft Berlin-Moscow / Aeroflot Moscow-Tashkent

Postmark:
Vienna 21.11.1934
Moscow 24.11.1934
Tashkent illegible

Postage:
Card abroad 0,35 Ö.S.
Lp surcharge 0,75 Ö.S.
Registered mail 0,70 Ö.S.
Total 1,80 Ö.S. postage due

-----------------------------------------

Berlin - Moskau — Taschkent/Usbekistan
Für die Luftpost nach Taschkent besteht seit 1.6.1930 Anschluss in Moskau an die DERULUFT-Verbindung

Wien-Berlin-Moskau-Taschkent

Ab 21.11.1934 Luftpostzuleitung ab Wien nach Berlin für Deruluft Berlin-Moskau / Aeroflot Moskau-Taschkent

Poststempel:
Wien 21.11.1934
Moskau 24.11.1934
Taschkent unleserlich

Porto:
Karte Ausland 0,35 Ö.S.
Lp-Zuschlag 0,75 Ö.S.
Einschreiben 0,70 Ö.S.
Total 1,80 Ö.S. Portogerecht