So I've had this keyboard forever. I think I bought it new, sometime in the late 80s or early 90s. It has an AT DIN connector. I thought I threw it out (some of the keys are worn out), but I recently found it while digging through some junk in the shop. I've taken it apart a few times over the years to fix the keys, so I know it is just a cheap rubber-dome. However, it is one of the nicest feeling rubber domes I had ever used before or since. I think that is why I've kept it even though most of my other dead rubber domes went into the trash long ago. It's a bit unusual in that each key has it's own little orange dome (instead of one big membrane of domes). The roof of the dome has the typical carbon coating (which is what wears out) that hits a membrane below. The rest is all plastic, but it is a much more solid keyboard than any of the other rubber domes that I have lying around. They don't even make cheapos like they use to, I guess.
I remember buying it because of the soft-but-snappy keys, BIGass enter key (I loved that on the XT keyboards), and the then-very-novel "Windows" key (you can see it's the 3.1 logo). I also liked that the Ctrl and Alt modifiers are 1.5 unit.
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After spending quite some time here, I realize that these appear to be Alps-compatible key caps. The legends have the soft appearance of dye-subs, but on closer inspection they are pad printed. Somehow they have not really worn at all. The caps are not immune to MEK, so I assume they are ABS.
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Anyway...probably not all that interesting to most folks here, but I thought I'd document it anyway. I didn't get any hits when seraching for this model. Qtronix is still around and they still use the "Scorpion" brand name.