Old Road Bike .... Sealed Bearing Hubs.

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.