I have two NMB Right Touch Mechanical Keyboards, Model RT-8200, circa 2004, compatible with WIN95 (but not WIN10).
I've heard these alled "vintage," and it seems difficult to find the NMB in general, NMB Technologies no longer have a Keyboard Division, so most of those you can find on eBay or its ilk are "pre-owned." I cannot use mine--Win10 doesn't recognize it--nor can I find a suitable driver.
These keyboards are beloved by those who do a lot of typing (writers, gamers), because their touch is consistent, responsive, w/audible feedback i.e., perfect.
The attachment is a PDF of the NMB Specs for the RT-8200 archived in the Internet Archives