Germany - East 1980 Aerosozphilex 1980 Airmail Exhibition se-tenant block of 4 unmounted mint, SG E2236a
Germany - East 1980 Aerosozphilex 1980 Airmail Exhibition se-tenant block of 4 unmounted mint, SG E2236a
Germany - East 1980 Aerosozphilex 1980 Airmail Exhibition se-tenant block of 4 unmounted mint, SG E2236a