This is a quality Digital branded PS/2 keyboard. Made by NMB Technologies Inc. this domed membrane keyboard is one of the highest quality membrane type keyboards made.
It has great feel and key travel, all while being quieter than a full mechanical keyboard.
Being a Membrane keyboard it is much safer to eat and drink around as well.
This was made in the early windows days so while it still retains the quality you found in vintage keyboards it also has the windows specific keys you come to expect in a more modern keyboard.
The keyboard has a notch in the back to tuck the cord into to direct it in either direction. It also has rear adjustable risers and little rubber feet in the front to keep it from sliding.
It is has PS/2 style connector, perfect for a vintage machine, but will also work on a newer machine with a usb adapter.
I just spent a little over an hour dismantling cleaning and reassembling this keyboard. every key was removed, cleaned and replaced. every part of the keyboard body was cleaned and sanitized, and every key was tested for function.
This keyboard is as good now as it was when new. The closed you can find to a flaw in this keyboard is a little ding on the right lower corner (see last photo) Is this the greatest keyboard ever?
No, that's why I'm only asking $50 for it.
It is however a really good keyboard.