Bike purchased in 1976 (used in great condition). All original Campagnolo Groupset & Frame Pump. Note: frame a "Brev . MASI" hand built in Italy and bike built in Carlsbad, So.Cal. I changed out to a Shimano groupset & cranks. This allowed me to fit a Six Cog rear cluster, in the narrow rear. Original was a Five Cog Cluster with one "Cross-Over" ratio, so only provided Nine Ratios.
The Bike was Hand Built by Ben Serrotta. Serrotta built the 1984 USA Olympic team bikes. Unused spare bikes were then Re-Painted and ID-ed as Serrotta bikes. This is one of them; a Nova Special. https://www.serottadesignstudio.com/philosophy
Two of the first prototype; Sealed Bearing, Large Flange Rear Hubs, I designed and made them from: 7075 Aluminium Bar Stock, SS Hex Steel Axles using standard Skewers, over 40 years ago.... along with matching Front Hubs. I just built them into the rear section of a home built stationary trainer; using some Metric 8020 off-cuts.