Leica IIIb, chrome finish, with unusual 50/1.5 Carl Zeiss Sonnar mounted in Leica thread mount.
The new Leica IIIb eyepieces mounted together, left, compared to the older style of eyepieces spaced further apart.
This was a model with a short life span. It was replaced in 1940 by the IIIC, which had a longer body casting, which made continued production of this, and the IIIA impractical. A small batch of 145 IIIB's were built in 1941. After the war, 600 were built in 1946 in an effort to resume production. In all, only 32,705 were made.
A red felt covered box for the IIIb.