This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1944 BSA M20 is powered by an air-cooled 496cc side-valve single and a four-speed transmission. The bike was refurbished under previous ownership as a replica of the bikes used in the North African theatre during WWII, and the seller acquired it three years ago. It has primarily been displayed in a military vehicle collection since, and an oil change was performed earlier this year. This M20 is now offered with a service manual, various spares, period-style attire, and a clean California title in the seller’s name.
The bike is finished in a desert tan which is noted to be a lighter shade than used in period. The trim is painted, and very little brightwork can be seen. The markings are of a unit believed to be active in the North African theatre, and features include girder forks, a tail rack with a passenger seat, canvas panniers, and a reproduction blackout headlight cover. Black wire-spoke wheels wear Dunlop K70 tires.
A friction steering damper is mounted to the forks, and instrumentation consists of an 80-mph speedometer and a headlight mounted amp gauge. 11k miles are shown on the odometer, but the true mileage is unknown.
The side-valve 496cc single was factory-rated at 13 horsepower and is fed by an Amal 276 carburetor. A four-speed transmission with a right side foot shift transfers power to the rear wheel via chain drive, and the seller reports third gear will occasionally slip when up-shifting. An engine oil change was reportedly performed earlier this year.
A service manual and various spares will be included, along with a period-style British Army overcoat, wool pants, and canvas boot gaiters.