I just got mine in this afternoon (the same guy apparently had four or five available through different auctions). The unit is in pretty darn good condition, except for a small blemish on the upper left corner of the board, and... the T key's spring is ****ed up. People who sell mechanical keyboards without bothering to do a simple one pass key press test should be shot in the face. Or kneecaps; I don't want to sound needlessly violent.
Okay, no big deal. I was planning on busting down the board for proper cleaning, so now I have to rip and drill out the plastic rivets as well. I've got everything disassembled, the keys are drying on the table, and I have all the rivets taken out. I've sorted through the springs and replaced the one that was obviously fubar, and replaced two more that were sounding rather weak. Tomorrow morning I'll start drilling through the studs and reassembling everything with nuts and bolts.
This model is definitely not to be confused with a genuine IBM made model M. The key caps are single piece, there are no metal reinforcement bars aside from one on the space bar, and the casing flexes with less effort. But it's black, it's sexy, and it's rare, so whatever.