I then thought "I have OpenSCAD, I can make them myself!"
This is what I have so far for 1u:

And a 1.5x:

Lined up all pretty:

full album
I saw them, but they look more DSA-like than Nixdorf's Softkey style. I think the big point behind Nixdorf's keys were they're almost the standard high-profiles but with the spherical wells.Stabilized wrote: Those look pretty cool, but how are you going to produce a finished keyset? From what I understand it includes making entirely new moulds for each key, which will no doubt take a while to develop and fund!
Alternatively you could look at the Devlin Q-series keycaps, they remind a bit of the general look of the nixie keys: