I found an Acer 6312 recently. I find 6312s very regularly, but this is the oldest one I've found to date.
It's a winkeyless model from 1995 and it uses UV-printed caps with the same legends as the KB-101A, unlike the later blocky UV-printed ones, and the lasered caps that came after that. It also has the secondary metal grounding plate inside.
I didn't think too much of it until I noticed that the switches look distinctly different from all the other Acer switches I've seen so far (and I've seen MANY). The housing is not matte, but much shinier, and the writing on the logo isn't centred, but aligned to the left. About half of them have thin writing, the rest bolder lettering, but in both cases it looks different from those on other Acer switches. Most notably, all of them have lubricant on the slider. The board had the black version all over, but the numpad + and enter, return key and Caps Lock had white switches - again with left-aligned lettering.
I took some pictures. First is the normal switch, below that the two varieties of vintage Acer switches. I wiped the top part of the lubricant off of one of the sliders, but found it very hard to make a good picture. Still shows pretty clearly though.
Has anyone ever seen this before?
