IBM Model M 1391401 Keyboard Jan 31 1989 Parts or Repair G3$59.99 + free U.S. shipping. "“Some keys are not working, cable not included.”
This
seems to be a standard Model M 1391401 with keys from a relatively rare p/n 1393464 (airline reservation) board, with lots of special legends—here's a closeup of another one:
So what you'd get is a set of special keys, plus a parts board, for sixty bucks. Not bad. (Or, being a GH peep, you could probably get the board working and keep the keys on it.)
Before buying, I'd just verify with the seller that this is the actual board for sale, to be sure they're not just using some Model M photos they found somewhere, thinking all M's looked alike.
Cheers. (I've had coffee, BTW.)