Summicron 50mm f2, the very first version of the second generation. Serial number in the 2.26 million range, manufactured in 1968. This is a transitional model, found only in this serial block, where the newly designed 5 group 6 element lens was fitted into the first generation barrel. In recent years it has been referred to overseas as the Transitional Model. Leitz product code is 11817, the same as the standard 2nd generation 6 element that followed soon after. Minimum focusing distance is 0.7 m.

From the Leica Model A, to the M3, the early Summicron and Summilux 35 and 50mm, the Noctilux f1.2, and in more recent years the APO Summicron 50mm, Leica’s first versions have always been made with tremendous effort, impressing people with their quality, design, and performance. This very first 6 element version also clearly reflects the strong spirit of Leitz.

It inherits the refined exterior design of the late first generation, a superb look that pairs beautifully with both black chrome and black paint bodies. This transitional model has long been said to deliver outstanding image quality, and this piece is no exception. A lens that truly performs.

A rare item.

Traces of wear can be seen on the helicoid and the edge of the filter rim from use. There are no dents or dings. It is in just the right condition for carefree use.
Fully overhauled in September 2025, including rangefinder adjustment. The operation of all moving parts such as the aperture and helicoid rings is very smooth. Rangefinder coupling is also excellent.
The glass shows only very slight coating deterioration, with no noticeable scratches or haze, leaving it clear and bright.

The earliest 2nd generation Summicrons are always surprisingly sharp, and this piece also delivers excellent performance.
Comes with genuine black-rim UVa filter, front and rear caps.