

The model was 6" long, seemingly in the 1/28 scale, and was fitted with a complex mechanism that once wound with a special key in the shape of a policeman, allowed for different patterns such as figure 8's or oval tracking, with a period of idling, all by cams and gears. The chassis was a bit self explanatory as far as adjustments:

The front lever adjusted the patterns while the one at the tail adjusted the tightness of the curves and idle speed.
The company also produced small quantities of dealer display cut-out models allowing one to see the complex mechanism, shown here on a 1952 Opel Kapitan standing on its platform next to another product of Prameta, a 1952 Jaguar XK120:

Amazingly, this beautiful Jaguar is one of the very few toys retained from my youth, and I must have liked it a lot as it does not have a SCRATCH on it!
These toys were very heavy for their size, nearly 14oz each. The automatic steering also controlled the trafficators on each side as well as the front searchlight.
Here is the Opel on top of its original and rare box, nearly crushing it:

The other and last model made by Prameta was a Mercedes 300 "Adenauer" sedan. Here is a painted version:

Prameta cars are not rare nor too expensive, but they can be if pristine, especially the painted versions. I always had a fondness for them because they exude so much quality. While they were toys, I am sure that more adults bought them than children because they were simply beautiful and looked good on a desk at the office.
Kollner was purchased by another company in 1956 but a downturn in the German economy forced bankruptcy.
Aren't you glad that plastic took over a few years later?
