1923 Rotogravure Helicopters de Bothezat Berliner Rotorcraft Aviation Historic XGNB9 ready-to-serve

ready-to-serve

by James Forbes

the Weiner Hall

This is an original 1901 black and white halftone print of "The Island of Nisida

offered by S

1923 Rotogravure Helicopters de Bothezat Berliner Rotorcraft Aviation Historic XGNB9 ready-to-serve"Helicopters Which Rise Vertically From Ground" This is an original 1923 sepia rotogravure with three images of two early helicopters: the top and middle helicopter is the invention of Emile and Henry A. Berliner; and the bottom helicopter is the de Bothezat helicopter during a test at Dayton, Ohio. CONDITION This 91+ year old Item is rated Very Fine +++. No creases. No surface rub. No tears. No water damage. There is printing on the verso. Please