A month has passed since posting a question in the “twins” section of the BSA workshop:
What type of inner primary chain case was fitted to a Rocket Gold Star?
Amazingly just two fellow members have offered up plausible but not definitive answers, despite well over 200 views!
With the asking price of an RGS now often exceeding £20,000, it would be good to know precisely what a prospective buyer should look out for, which is not easily faked.