#2. "RE: Is my 1970 Commando an S? Please help ID" In response to Reply # 1
They also had the headlight ring on the low pipe roadster which was very similar to the "S". I don't think there's any way to positively tell as body work was basically the only difference between models and could be easily switched to create whatever model desired.
#3. "RE: Is my 1970 Commando an S? Please help ID" In response to Reply # 2
Hi. If you take a close look at the side covers you will find the S side cover is slightly sharper at the rear top point. Also it has the square oil tank sitting on the front of the battery carrier.Cheers