History of the balloons and airships - 7 stamps mint never hinged, catalog no. 1118-24, Mongolia

The postage stamp for 20 Mongo shows the first ascent of the hot air balloon on November 21, 1783, the Br & uuml; der Montgolfier, in the garden of the castle "La Muette" . The inscription on the stamp mentions a wrong date.
The airship LZ "Graf Zeppelin" over the polar ice, on the occasion of the polar voyage on 24.-31. July 1931, when it hit the Russian icebreaker "Malygin", can be seen on the postage stamp for 30 Mongo .
On the postage stamp with the face value of 40 Mango the test airship of the USSR "Osoaviahim" can be seen during its Arctic flight on January 30, 1934. This airship was intended to transport goods to inhospitable areas.
The postage stamp for 50 Mongo shows the USSR impact airship of the "Norden" type. With this airship, loads of up to 100 tons can be brought into inhospitable areas of the north of southern Russia.
The airship of the Soviet airship project "Aero 340" can be seen at a face value of 60 Mongo . The airship has a length of 60 meters and a height of 3600 meters as well as a payload of 100 tons, a range of 4000 kilometers and a speed of 240 km / h.
The airship project of the Soviet scientist Nestrenko is depicted on the 80 Mango stamp. The airship in the form of a lifebuoy is intended to transport heavy machinery such as turbines.
The postage stamp for 1.20 Mongo shows a modern construction of a flying crane. This construction is based on the design idea of the French aviation pioneer Ernest P & eacute; tin from the year 1850. Today this crane is designed for a payload of up to 500 tons.