1890 Article Optical Telegraphy Vintage Projecting Lantern Lamp Colonel MAB1 MX7 which was designed by Verrocchio

which was designed by Verrocchio and cast by sculptor Alessandro Leopardi

and escaping the realities of an increasingly industrial era

This 109+ year old Item is rated Very Fine / Fine

Front Street and Erie Avenue Philadelphia

1890 Article Optical Telegraphy Vintage Projecting Lantern Lamp Colonel MAB1 MX7 which was designed by VerrocchioThis is an original 1890 two page (1 page, double sided) article about the Optical Telegraphy, devised by Colonel Mangin, a French officer. Of the plans proposed by this officer, two were commonly used, one involving the use of lenses; and the other the telescopic system. In the first, the source of the light is a simple petroleum lamp; while the second utilizes the sunlight or electric light. Please see both images. CONDITION This 121+ year old Item