Whatever it was that they used there. I don't think it's impossible that there is something good out there in the Alps switch and clones jungle (apart from the "Montereys" in newer Laser/VTech boards - maybe they used an earlier version of these in yours?), but I haven't found it so far and wasn't too fond of complicated blacks and whites.
I think they're your typical run-of-the-mill simplified white ALPS, nothing unusual. I do however find their action rather smooth, with a crisp but not dramatic tactile point. My Leading Edge, believed to have simplifieds also but age would suggest genuine ALPS, is quite a bit harsher.
Unless there were "white Montereys" I've probably got typical simplifieds.
The switches aren't *that* bad for it to deserve that. Yes, they are annoyingly clacky, and tactility is a bit on the weak side for a medium force switch, but ultimately I think they're actually quite pleasant to type on (once I put some other keycaps onto my "inverse-stem Futaba" KB-5182, at least - the original ones had rather sharp edges). Less heavy than BS or MX blacks but lighter than MX blues, that's not a bad force range to be in.
True, it's not really that bad...but I've found the more I bash a type of switch, the easier it is to get someone to take the board from me
(re: peerless...)
But yeah, it's not bad at all. I would probably enjoy it if I got used to it; I just don't want to hurt the NIB-ness of it because it'll cut whatever little value the keyboard seems to have.