Daniel Beardsmore wrote: Mr.Nobody wrote: If we've found dozens of Ms of this sort, I'd believe the counterfeit theory...presently I prefer the prototype theory.
Well, as I said: there are plenty of legitimate keyboards where very few are still around.
Take for example the Monterey K7S:
http://imgur.com/a/oNiCm
It has an official Monterey label, official Monterey designation, and the FCC ID stated on the label is genuine and has a last-action date with the FCC in the same year as that shown on the IC depicted.
It's a completely legitimate keyboard. How many have we found to this day? One.
It's got a type of Mitsumi switch never seen anywhere before or since. Monterey moved onto Alps switches shortly after that.
The keycaps are remarkably similar in construction to those used in the [wiki]Tulip SMK series[/wiki]: note the solid first shot, step between the first and second shots, and circular parts along the reinforcing walls. However, the design is quite different, as is the typeface used for the legends.
There is a whole raft of mysteries just in this one discovery alone.