1923 Rotogravure Helicopters de Bothezat Berliner Rotorcraft Aviation Historic Corporate / Business (General) This is an original 1914

This is an original 1914 black and white halftone print of Constantinople

French Company

" made with Pineapple Vinegar

This is a small original 1898 black and white print ad for the American Engraving Company

This is an original 1932 photogravure of rocks on the Silver Coast of Romania

1923 Rotogravure Helicopters de Bothezat Berliner Rotorcraft Aviation Historic Corporate / Business (General) This is an original 1914"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