10 Kop violet, 15 Kop dark gray blue, 20 Kop carmine, 50 Kop dark brown, 1 Rub dark green perforated L 12 1 / 2 air ships 1931 on registered airmail cover to Lorch, ZKr MOSKVA A -8.6.31 50 POTSCHTOWOYE OTDELENIE, red arrival postmark ZKr with airmail transported airmail office BERLIN C2, transit postmark Berlin C (9.6.31) and arrival postmark Lorch (10.6.31), both at back, good condition