This system was advertised from 1946 until the early 50s. It initially came in four outfits numbered 0 to 4.

These had nickelled steel strips and girders and brass wheels and connectors. A unique feature was that there were also bakelite rectangular and circular plates.

By about mid 1947 the steel parts became blackened rather than nickelled.

In 1949 the system was completely revised with 10 outfits graced with daft names (see last picture for details).

The bakelite plates were replaced by flexible steel ones and all main parts were painted red, orange, blue, yellow or grey in a seemingly random manner.

A full history can be found in the wonderful "Other Systems Newsletter", No.38, pp 1134-35. Details here: http://www.osnl.co.uk/