All original? Hot pink?
A lot of the value depends on the condition, but this bike (if indeed a 1985 Trek 770) Is full 531c (including fork and stays) and had Campy Super Record components. $400 or so the floor and the ceiling depends on the condition and the location. I can see a ready to ride example with very limited scratching on the frame with the original Campy components and tubular tires bringing 4 figures in the right market.