This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1960 BMW R50 is a matching-numbers example that was purchased one year ago from a BMW mechanic who had owned it since 1970. Believed to have had three owners, the bike shows just under 77K miles, of which the seller has added 500 over the last year. Powered by a 494cc boxer twin with a 4-speed transmission, the previous owner replaced the oil slingers and recently the current owner changed all fluids, adjusted the valves, re-torqued the heads, installed new pushrod tube seals, and added new tires. This R50 is now offered at no reserve with a factory tool kit, the removed dual seat, and a clean South Carolina title in the seller’s name.
The traditional black enamel features white pinstripes and is believed to be factory applied. Age related corrosion can be seen on the frame, fenders, and some of the brightwork. The bike features an Earles fork, a 3.5 gallon tank, and a period Brown side stand. The factory Schorsch Meier dual seat was replaced with a new Denfeld Solo seat, and a German made rear fender rack was added. Wire-spoke alloy wheels wear new Avon Speedmaster tires and tubes.
The stock handlebars were replaced with new 22mm Flanders style bars that have a lower profile. A factory supplied steering damper and period Albert mirrors are fitted, while the reverse sweep 120MPH speedometer has a 5-digit odometer that shows just under 77K miles.
The air-cooled OHV 494cc boxer-twin produced 26 horsepower in stock form and is fed by two 24mm Bing carburetors. The 4-speed transmission sends power to the rear wheel via a shaft drive. The previous owner replaced the crankshaft oil slingers at 35K miles and again at 73K miles. The current owner changed the fluids, adjusted valves, re-torqued the heads and installed new seals on the pushrod tubes.
No service records are available as the previous owners were BMW mechanics who performed much of their own work. Inside the tool compartment is hand written notation of some services performed in the past.
A complete factory tool roll is provided, and the removed Schorsch Meier bench seat will also be included in the sale.