Hey guys,
I happened to see this on eBay today:
Rare IBM made by Unicomp Model M Mechanical Clicky Keyboard PS/2 02k3760

Obviously
02K3760 isn't one of IBM's standard Model M p/n's. In fact, I've found no references to it elsewhere.
The keycaps are standard, so that wouldn't be the reason for the unique designation.
Considering its late date, it seems likely that it was a custom order for a particular IBM customer. (Someone wanted new BS KBs ten years ago—isn't that charming?) I imagine IBM wanted to control their own p/n's, so do you think they requested a unique one for these for some reason? Or did Unicomp slap one on them because IBM
didn't request anything specific?
These were also apparently made for use in Canada—could that have something to do with it?
Finally, while the seller's hopes for $149.99 seem far-fetched, do any of you think a Unicomp-made KB is worth that kind of dough just because it has an unusual p/n? I've learned not to be surprised by that sort of thing. :?)