Bottom bracket second digit is a 5, so 1985?
I've never seen one this color before, the ad for it made it look black, but when I pulled up and saw it matched my dark shadow grey harley truck I had to take it home with me. It doesn't hurt that it fits pretty good and all the components (shimano 600) are working perfectly!
Frame is roughly a 25". It's incredibly light for a steel bike to me.
The seller was the 2nd owner, bought it in 1989 and did tri's with it, he gave me the original drop bars, a spare tube, a presta valve pressure gauge, and the tool to remove the freewheel which I'm going to do later today as I clean it up.