20x binoculars of the French balloonist, in a case

An original and very rare pair of binoculars that belonged to the commander or crew member of an airship, airplane, or balloon. The optics of binoculars are based on the Kepler system with a wraparound lens. Multiplicity of 20. Wide field of view. The brand is "MG" ("Ministry of Defense"). The black velvet lining bears the stamp of the famous French optical artist "L. Petit Fabricant de Jumelles 12, Rue Barbette, Paris" in gold lettering. Identical brands on the eyepieces. The company was active in Paris at the turn of the 19th and 20th centuries, as well as during the First World War. The workshop was famous for producing high-quality military, marine and civilian optics (field binoculars, theater binoculars and telescopes). During the First World War, binoculars of this company were supplied for the needs of the French army (Ministry of Defense) and were purchased by officers of the British troops. The length of the binoculars when unfolded is 553 mm. The original trunk is included. It's rare. Guarantee of authenticity.