I couldn’t resist trying to capture some Serotta steel frame magic so I pulled the trigger on eBay last week. This appears to be a frame with the “1/2 lugs” joining certain tubes that I’ve read about. So I take it to be earlier production for which those 1/2 lugs took a lot of time to fit and assemble properly. Later on the company had enough capital to have lugs made to order that would accept the Colorado Concept special tube profiles without need to cut lugs to make things fit. Until then, each project was a hand-fit exercise in custom frame building! From the listing:
Measures:
Top tube 58cm center-to-center
Seat tube 58cm center-to-center
Head tube 166mm
Takes 700c wheels, 100/130mm spacing, 1" headtube. Includes Shimano Dura-Ace threaded headset.
Aluminum fork - unknown brand - painted to match.
My photos seem to show a model and serial number? C358L and 367, respectively?
So, a few questions about that 1” threaded aluminum fork. It is not original to the frame right? Seems like a lot of trouble to paint it to match if it wasn’t original to the frame? I have a Kinesis carbon 1 1/8” Threadless fork and head set on hand to sell off to fund a replacement if I want to. Should I? If so, what am I looking for - era-specific or modern - to suit this frame?