(and I do have to thank CeeSa for letting me have them):
One of them (and the reason why I wanted the whole bunch) was a staggered keyboard, here Tipro's original picture of it:
I now use it as my daily driver, connected with a 8x8 matrix keyboard on the left and on the right a 16x8 matrix keyboard with a touchpad affixed on it:
(please excuse the bad picture quality)
That's a 80 cm keyboard with more than 300 keys. I'll never understand why people want space savers
I'm still in the process of planning and re-planning, designing and re-designing, programming and re-programming, trying to get keys which will functionally and optically fit.
There's a whole lot I would have to comment, but this is supposed to be a photo section, so perhaps I'll post a few details in the workshop section if anybody is interested.
By the way, no need to ask - the key on the left of the second upper row of the alphanumerical keyboard is not for sale