This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1956 BMW R50 is finished in black with white pin striping and is powered by its numbers-matching 494cc opposed-twin. A restoration was recently completed by the seller, who has owned the bike for approximately four years and has been restoring vintage BMW motorcycles for over 20 years. Work entailed a complete disassembly, refinishing the frame and bodywork, rebuilding the aluminum wire wheels, and reconditioning the engine and driveline. Only a handful of shakedown miles have been added since the restoration was completed. This R50 is now being offered in Buffalo, New York with a clear transferable registration in the seller’s name.
The frame, fork, and swingarm have been taken down to bare metal, zinc primed, and powder coated. The bodywork was media blasted before being refinished in Avus black with double-row hand pin striping. The seller notes that the factory “dished” headlight bucket and Eber tail lamp assembly remain installed, as do the “round top” front shock covers and original headlight mount brackets.
New Hella turn signals have been added along with a replacement wiring harness and handlebar switches. Shouldered aluminum rims were professionally polished and are laced to a set of rebuilt “single cross” drum hubs with stainless spokes and nipples. A set of Heidenau C Block tires and tubes come fitted
The Veigel speedometer features the customary domed lens, and the odometer was reset to zero during the restoration.
The final drive, 4-speed gearbox, and numbers-matching 494cc opposed-twin have been reconditioned. New German bearings, seals, and gaskets were utilized. The aluminum engine cases have been cleaned and finished in a high-temperature satin clear coat to prevent oxidation. The Bing carburetors are correct for that year and model and reported to wear the correct part numbers. They have been stripped, media blasted with 9mil glass beads, and fitted with new jets, needles, gaskets, and floats.
Closeups of the stampings on the engine case, frame, and head tube badge have been provided in the gallery below.