Original 1928 BSA Motorcycle Plans displaying the general arrangement of the BSA 4.93hp Standard (Side Valve) 1929 Model S29 also H29 (5.57hp) half full size scale, t/w 1931 BSA 3.49 O.H.V Motor Cycle Engine 72m/m Bore x 851/2m/m Stroke, the plans used in order to construct the model and engine, dated with approved signatures, printed on linen direct from the original drawings, ready to frame, largest measures 100 x 70cm approx. (2) Note: Obtained from the previous BSA Motorcycle factory in Redditch, items that are rare on the market.