I picked up a old Cannondale (in like-new condition) to use for commuting. The top tube says Cannondale (no other ID). I called Cannondale with the serial number. All they could tell me was that it was manufactured in 1987. I am assuming that it is an ST model since it has two braze-ons on the front and rear, three bottle holders, braze-on for rear rack, and through-the-fork braze-ons for a front low rider rack.
Cannondale made three ST models in 1987: ST800, ST600, and ST400.
Does anyone know how to tell the difference between the three?
