The first keyboard is a Dell AT101 #GYI3PVAT101 with an old logo and salmon Alps. For me, the surprising part is that
- those switches click only sometimes (especially when released quickly) and only on the upstroke, not downstroke;
- no keycap is yellowed except spacebar, and key lettering looks blurred... could it be dye-subbed PBT?
Finally, a bonus. I have found two numpads populated with PCB-mount white low-profile Alps. Only one has a TRRS cable, the other one nothing. I wonder what I'll do with them.
Rambling over.