Post the serial number.Looking for a postive ID on this frame
Parts date it around 93.
m800-600-900 or BOTE?
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Actually, seat stay join is different on mine…Looks identical to an M700 I have that I’m thinking of stripping and polishing
So, probably 92 M-series model, as it already looks to have 1-1/4" headtube (not in 91 models). It is impossible to determine exact model. The frames were the all the same, only components changing according to model, so M2000/1000/700. The geometry does not look like M800 BOTE, but you can do measurements and refer to https://vintagecannondale.com/year/1992/1992.pdfSerial has helped me ID it as a 135mm rear end, sept 91 , 15 inch frame. But won’t help with model unfortunately