BSA C10,C11,B31,B32,M20,M21 PARTS BOOK FOR 1946 RIGID MODELS - 128 PAGE SIDES THIS COVERS ALL 6 MODELS. THIS IS AN EXCELLENT COPY OF THE ORIGINAL BOOK WITH CLEAR PICTURES AND PART NUMBERS.  (((((((( AND THIS PARTS BOOK IS ALSO VERY USEFUL FOR 1947 AND 1948 MODELS AS THERE WERE VERY FEW CHANGES ON THE C10,C11, B31,B32 AND M20,M21 AS THE ONLY CHANGES FOR EXAMPLE WERE CHANGING FROM SPEEDO IN THE PETROL TANK TO MOVING THE SPEEDO TO THE TOP OF THE FORKS AND THIS 1946 PARTS BOOK SHOWS BOTH THE GIRDER FORKS AND THE TELESCOPIC FORKS FOR ALL THE MODELS MENTIONED )))))))))     ((((PLEASE NOTE THAT THIS PARTS BOOK HAS A RING BINDER WHICH ENABLES IT TO BE LAID OUT FLAT AND READ AT EVERY PAGE)))) (((WHICH YOU CANNOT DO WITH THE SPINE TYPE BINDER)))  MY BSA PARTS BOOKS ARE PROVING TO BE THE BEST AVAILABLE PLEASE SEE MY FEED BACK ON THEM. ANY QUESTIONS PLEASE MESSAGE.