Muirium wrote: What's the feel like compared to other switches? Especially modern chiclet laptops? And how thin are these guys?
They're very clicky (and snappy-sounding, not necessarily louder) compared to laptop keys. The stems don't seem to have any resistance to tilt, so pressing off-center is almost like pressing the D-pad on a game controller. It still clicks, though. The height of the entire switch including the button is 9 mm above the surface of the PCB.
I am pretty sure this was intended to be used underneath a covering membrane of some sort which would contain the legends for the keys. Thus, the clicks had to be loud and quite tactile to get through the intervening layer.
There appears to be a date of manufacture in the lower right corner of the back: 12/12/2000 (it doesn't matter what date format they use

). Thus, it's not ancient, and there could well still be registers in use with this exact part. That's why I thought it might be worth more for its original purpose than if it is altered.