I'm finding these guys go for a lot of money, 1k$ and upwards, with something missing or bubba'd up they're still pushing 1k$ pretty hard. I don't get it, were production numbers low or are they just that desirable ? I like the look of them real well, they seem like a super-solid trainer but it's hard for me to imagine how the market settles where it's at on these. It seems like there's plenty of them available.
I did learn one really cool feature they have is that part of the M2 upgrade was a headspace adjustable screw. Neat. If somebody has one, I invite you to trot out some pics. Cool old trainers that will be having a big anniversary in a few years, they started in 1926.