Also the top fin is missing between the push rod tubes.
Vintage BSA Side valve SV Engine pre war B34 B1 250cc 1930s
BSA C15 250cc STAR MOTORCYCLE METAL SIGN.(A3) SIZE.VINTAGE BSA MOTORCYCLES.
Valve Guide Fitting and Removal Tool for Classic Vintage BSA Models
Champion Spark Plug L82C Vintage BSA Replaces L7
TRIUMPH VINTAGE BSA JOHN BULL No 16 LONG PATTERN TYPE HANDLEBAR GRIPS 7/8" BARS
BSA Bantam Engine oil seal set fits D10-D14