USSR stamps 1931

USSR, 1931: the 10 stamps issued that year, with photos, face values, catalogue values and details.

• Airship "Graf Zeppelin" meets Icebreaker "Malygin" — 35 Soviet kopek
• Airship "Graf Zeppelin" meets Icebreaker "Malygin" — 2 Soviet ruble
• Airship "Graf Zeppelin" meets Icebreaker "Malygin" — 30 Soviet kopek
• Airship "Graf Zeppelin" meets Icebreaker "Malygin" — 1 Soviet ruble
• Airship Over Moscow Kremlin — 20 Soviet kopek
• Airship Over USSR Map — 50 Russian kopek
• Worker — 1 Soviet kopek
• Collective Farmer — 20 Soviet kopek
• Vladimir Lenin (1870-1924) — 14 Russian kopek
• Worker - Overprinted — 15 Russian kopek