missing lynx wrote:Isn't that an S3 side case?
Sorry for sarcasm, but yes it is. Is it original? I have no idea! Many winter model parts were s3, the air scoop springs to mind. I don't know if the side cases were s3 or maybe a mixture. There are a few from 66, including mine, so I'd gues they would be the likely candidates for s3 cases if there's a mix.
This one has been through the mill. I didn't think it was a winter when I bought it but the frame number says otherwise, so I bought the parts that were wrong. The chain case may well have been changed over the years. Who knows what lies in its murky past, but I'm not really a purist, so I'd prefer stronger s3 anyway.