This really nice 1927 flattank BSA 500cc Colonial Model has been restored for a museum collection circa 15 years ago, it was originally sold in Europe as an export model.
 
The machine is fitted with BSA's own three speed gearbox, internal expanding brakes, drip feed oil pump, period Bosch magneto and brass Amac carburettor.
BSA offered several models in 1927, some of them were fitted with wider mudguards for export, called as 'Colonial' models. This 1927 BSA Colonial Model is also one of them.
 
Further equipments include complete acetylene lighting set, Terry spring seat, Stewart speedometer, timekeeper and a leather case mounted on the rear carrier.

The BSA was exhibited in a private museum the last ten years or so, is in running condition, needs recomissioning for returning to the road, video on request.

Video: https://www.youtube.com/watch?v=16nX8CB65hY