I'm glad to see respect for my Swords of Fury, which was the first pinball machine I ever bought; I bought it for $500 in 1997 and still have it. Sadly it was pretty beaten up when I bought it-- the playfield has lots of the little half-circle scratches that result from dinged-up balls being used, the base of the right side of the Magic Tunnel ramp has been replaced with black tape, and a majority of the insert labels are half gone or worse. Still, I wouldn't sell it for what I've paid for all 5 of my pins combined. I wrote a rules sheet for it from memory in the mid-1990s, before I bought one; it's still the one linked to to this day on ipdb.org. I really should update it one of these years. My avatar picture here is from the lit artwork on the back wall of the playfield, near the upper playfield.

My second-rarest is my Laser Cue, of which ~2800 were made. My Black Knight 2000 (~5700 made) has the futuristic artwork on the plastic, which I'm told is rarer than the medieval artwork version, but I don't know the numbers on those.

I almost forgot, at one point I had a 1982 Bally BMX (406 made) and a 1974 Williams Skylab (3651 made). My ex found a guy that had them mouldering away in a garage, he said they hadn't been on in 10 years. Neither one worked; the BMX had a destroyed CPU board due to battery leakage and the playfield was worn down to the bare wood in many spots. I bought both of them for $100, but my repair skills were lacking at the time, so I sold the BMX for the $100 I paid for both, and I ended up giving away the Skylab to a good home, after holding onto it for 2 years and not making any progress on it.