Mars of White Friars Lane, Coventry.
Mars were motorcycles produced from 1922 to 1924
The machine was fitted with any of the popular single-cyclinder engines available at the time. Capacity also varied. The engines included: Villiers 147cc, 269cc and 342cc; JAP 292cc and 597cc; Blackburne 348cc; Bradshaw 348cc plus the sleeve-valve Barr and Stroud of 249cc and 499cc.