I was not disappointed since it turned out to have Cherry MX Black switches (if I am correct?).
What I want to find out is what manufacturer and model is this and what year it was made? I haven't opened it yet, but I will post updates after I do so (probably for the weekend). It was apparently used as a part of a cash register in a pub, since it has written down names of the drinks on the caps.
I want to find out how to clean everything. The dust and hairs won't be a problem, but I am worried about the black stains and yellow degradation of the casing. Is this something that can be removed?
Is it possible to hook this keyboard up on a PC with usb, it has a DIN connector if I am right. Would it be still possible to use the programming function of the keyboard itself?
Oh so many questions, here are the pics, click spoiler for more:
The keyboard.
Spoiler: