The Hektor-V 2.5/12.5cm lens officially launched at Photokina in 1954 is based on a projection lens and was manufactured until 1963. During the production period there were lenses manufactured in Wetzlar as well as in Midland, Canada. An exact information to the respective quantity can not be givven, unfortunately.
A special feature of the Hector 12.5cm is how the lens with front and rear cover and the associated lens hood can be assembled for transport to a sort of closed "container". This ensures the best possible protection. No second Leitz or Leica lens was built comparable.
The first prototypes appeared already in 1948 and the pre-production started around 1949/50. The first of these lenses were provided with the focal length 12cm and had a brighter chrome plating than the regular series version.
The reason to change the focal length in the series to 12.5cm was the higher taxation of lenses up to 12cm focal length in the US. Effectively, the Hektor 12.5cm is always a system with about 120mm focal length.
In Vidom 95 (06/2008) there is an excellent article by Dr. B. Bawendi which digs deeper into the development and the details of the Hector V 2,5/12,5cm.
The optical performance of the lens is very good even by today's standards with a slightly softer color reproduction and contrast at full aperture. Since the lens was intended primarily for portrait/people, this imaging characteristic is quite advantageous.
The offered Hector-V 2,5/12,5cm comes from the year 1959 and is delivered with front cap, rear cap and lens hood
Technically and cosmetically, the condition is very good.
Total production: approx. 4.200 units
Rarity forecast: R6