That is one of the most awesome keyboards ever made. I've got one — I've just realised that it's the OEM source product of my Tulip ATK 030244. (Including those funky arrow keys!)
Yes those are genuine complicated blue Alps switches, and the keyboard is very resonant, giving it a really rich, lush sound.
FCC registration date is 04/10/1987, so that will give you some idea of its age.
The huge down side is the vintage layout. I started moving the switch uppers (upper shell, return spring, slider, click leaf) into my Dell AT101W — the lovely resonance is gone, and the switches don't feel as light, so I may need to swap out the actuator leaves as well, as they may have less "give" in the later generation design used in the Dell. Ideally the switches should be transplanted properly, and I feel sad at losing the integrity of my beloved Tulip keyboard. (That was my first clicky keyboard.)
