Chekhov's Motorcycle. A mystery BSA twin. The engine looks to be the 770cc Model E but the styling is too late as that was only produced until 1924. Maybe it is a 1000cc Model G from around 1928, but it does not look big enough. I have ridden an earlier Model G and it was a big bike. Could it be a 770 E28 or 770 Colonial? Link to "www.flickr.com"
Same one? (, 3.2)