Re:
I came across this old topic.
That's a 1992 bike. The M800 was a Beast Of The East idd. Not sure if this M600 was one too. Looks like it has the elevated bottom bracket on the pic. If the bottom bracket has the same height as the axes of the wheels, it's definitely a Beast Of The Easte frame. If there's a drop, it's a sloping 3.0 frame. But there is no difference in quality. Only in that part of the geometry.
I came across this old topic.
That's a 1992 bike. The M800 was a Beast Of The East idd. Not sure if this M600 was one too. Looks like it has the elevated bottom bracket on the pic. If the bottom bracket has the same height as the axes of the wheels, it's definitely a Beast Of The Easte frame. If there's a drop, it's a sloping 3.0 frame. But there is no difference in quality. Only in that part of the geometry.