Commando Models during Series 1:
"Commando" 4/68-3/69 20M3 engine - prior to being renamed as "fastback"
Interesting as the early ones, (May 68) had 'Glideride' suspension before named isolastic
(
www.classicbike.biz/Norton/Brochures/196...mmandoBrouchure2.pdf
)
Fastback 3/69-8/70 20M3 / 20M3S @131180+
"R" 3/69-9/69 early 20M3 later 20M3S
"S" 3/69-6/70 20M3S
'S' Types fell within the range of Engine Nos. from 131257 to 135088 (but not all were S)
Roadster 3/70-12/70 20M3S
Fastback II 9/70-12/70 20M3S
END Series 1
Note: while the body style names have been carried forward, individual parts would often be re-engineered into new parts, compatible only for later series.
