deskthority

Picked up a CPT Phoenix Jr. system at an antique store for a decent price, and don't know what these switches are. They are held up the keycaps it seems which have a buckling rubber sleeve around the stem of the cap. I think they feel pretty good, would feel excellent if not for the dirtiness of the switches. I'll post a couple pictures and hopefully somebody here can help me out.

Also if anybody knows anything about the CPT Phoenix Jr. please let me know because I know nothing about this system except that it's a word processor, I just got it for the keyboard haha.

After looking around a bit in the Wiki, I think the switch is Low-profile ITW Magnetic valve.
A Symbolics keyboard has the same switch, with a white slider.

Edit:
Kbd News article about the CPT Phoenix Jr.
Wikipedia entry about the system.

Please post more pictures of this gorgeous artefact!
I'd volunteer to add them to the Wiki if you don't.

This seems to be the exact switch yes! Interestingly the stabilized keys in the alpha-numeric block do have springs under the sliders, but they're the same low profile variant of the switch. Right now I'm cleaning the board up a little bit, but once I get a moment I'll post pics of the keyboard and the whole system.

Here's a little before/after of the keyboard, plus a picture of the board with no caps, and a picture of the whole system (minus printer and gargantuan external power supply).