Telyt 5/60cm Mirror Lens prototype

The famous prototype 60cm mirror telephoto lens. With the serial number 790001, this is the only example of this impressive lens ever made. With the hood retracted the lens is 37cm long, with a diameter of 18cm and a weight of 5kg. It was designed by W. Albert and W. Mohr to work with Visoflex and equipped with focusing bellows. A feature uncommon in mirror lenses is a variable aperture f:5 to f:11. The lens was a part of the Leitz factory museum, it still has the special sticker attached 'M476'. The original museum inventory card is also included in the offered lot. This unique lens can be seen in Lager, Vol. II 'Lenses' on page 133, as well as in W. Albert 'Geburtstage der Leitz-Foto-Konstruktionen ab 1927' on page 155. It is one of the most spectacular constructions from Leitz and for sure one of the most interesting item from the history of Leica.