1959 BMW R-Series for sale

For sale my unique vintage BMW R 27 racer. This bike has a unique history and provenance of which I can supply documentation, if desired. I purchased the machine about a decade ago. I am a senior rider with a love of all things BMW. I have way too many in the stable and bad health is forcing me to thin out the collection. This machine runs and has been ridden literally around the neighborhood by me about once per year. It was put up wet with fuel stabilizerin it in June of 2022. The bike was built by Kari Prager, a noted California BMW guru and owner of the CaliforniaBMW Triumph dealership in Mountain View, California. Mr. Prager passed away in 2010. I quote below an email message from him describing the build and his experience racing the machine:
"Yes, I did race it years and years ago with AFM at Sears Point. It was about as fast as an average Ducati 250. It was a big job... briefly, I used an R 69 S crankshaft split in half with one conrod and one R 69 S piston. Special oil pump shaft, R69 S cylinder turned down to mount up like a /5 cylinder with longthrough-studs threaded into welded up case. Ported R 69 S head with dual plugs./2 transmission gears with the shift selector reversed to keep a stock pattern with the lever turned around. /2/5 front brakes and /2 front wheel. Koni shocks. Solo seat with no spring. Total loss electrics (12V) and a 32 mm Dellorto".
I am happy to answer any questions that you may have. Would be great to go vintage racing with this machine or to display in man cave if you wish.
I list items and describe them as accurately as possible and with honesty. The bike has no title as it was never intended to be on the street. Thank you for taking the time to read my listing and feel free to ask any questions you may have. I've just received information back from BMW group Historic. The archivist states the machine was built on 7/19/1963 and shipped to then USA BMW importer Butler & Smith on 7/23/1963. So it is clearly a USA model and likely a 1963 model year.