Are they still made ? Just been sorting an old junk pile and there was a faded paper bag with a couple of Germanium AC126 trannies with highly distinctive red slide-on boots. These were part of a Philips construction kit I got as a crissy pres a long long time ago. The board, I remember, was covered in springs to tie components together rather than soldering.
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on