I've been going through my 'real junk' boxes getting rid of the real dross of ages, and have found some NIB (new in bag, in this case) Suhner N Jacks which I can't identify. They are not in the current Suhner literature.
The part number is 21N 50-12-101/003. The connectors look as though they are designed for a heliax (using that term very loosely!) - but which one? Does anyone have an old Suhner catalogue which refers to them?