The successor of the Super Nettel as a cheaper alternative to the Contax II was the Super Nettel III only it was released under the name Nettax.
The Nettax was introduced in 1936 as a cheaper alternative to the Contax II. It was the
successor of the Super Nettel. In a brochure of Zeiss Ikon they called the Super Nettel and the Nettax the miniatures.
Zeiss took the design of the Super Nettel, a folding 35mm camera with the focal plane shutter of the Contax I and the rotating wedge
rangefinder from the Super Ikonta line. The Nettax fits between the Super Nettel II and the Contax II. But unlike the Super Nettel, which was equipped with a bellows, the Nettax was a rigid camera with an interchangeable lens system.
When the Nettax
was first shown in 1936 it was even named Super Nettel III.
This essentially put it into the same market as the Contax II and III but it lacked the large combined viewfinder and rangefinder. The camera had a coupled rangefinder but with a shorter rangefinder
base then the Contax II and III. So focusing was more difficult. In my experience with the camera the very small and dark rangefinder window is a much greater problem.
One might think that the Nettax was just a stripped down and therefore cheaper Contax,
but it wasn’t. Almost nothing was interchangeable between the two cameras. The Nettax had a lens mount with specific bayonet. A strange lobe on top contained the rangefinder window.
There were only three lenses made for the Nettax: Two standard
lenses: the 50/2.8 Tessar and a collapsible and cheaper 50/3.5 Tessar. There was also a 105/5.6 Triotar telelens. Especially the telelens is very hard to find and therefor rather valuable.
In France In 1934 the Super Nettel
III aka The Nettax was sold for:
With Tessar Zeiss 3.5 Fr 2550
With Tessar Zeiss 2.8 Fr 2795