A quick note for those who may be seeking to harvest the keys from this puppy:
There were multiple variants of the NeXT Alps keyboard, and this appears to be the one with the L-shaped enter key and some special characters keys (tilde, pipe, etc.) banished over to the numpad. (Since they're on a different row, they will likely have a different conformation for their striking angle.)
I believe that makes this the "later" variant. Another (earlier?) variant has the almost-standard layout, as pictured in the advertisement above.