I bought this frame from a very nice, middle aged gentleman off of Craigslist today. He lived in a nice area of town, and had a very innocent demeanor about him. There appears to be no evidence of a removed serial number, so I'm not really worried about the frame being stolen.
That being said.
This bike has no branding what-so-ever, nor does it have any kind of serial number. The only mark on the entire frame is an "M" on the bottom bracket (looks like a "V" in the pictures). I have no way to know if the fork is what came with the frame, but it is painted the same (metallic black). There are front and rear bosses for canti brakes, which to me (I'm new to this) suggests cyclocross, but there isn't really a whole lot of clearance for big tires.
The main thing on this frame that may help to identify it is the rear brake cable stop, which extends from one side of the seatstays only. I've not seen this before (but for all I know it's common).
I'm just wondering if anyone could clue me into what this frame may be.
I'll happily provide any information that I can. I do own digital calipers and will take measurements if needed.
The frame is 58cm to the top of the seatpost, and 56cm to the center of the TT.
The bottom bracket is english.