Hi Andrew,
I have had mine since 1970 and it had been messed about with pretty much.
It is a touring version so has gaiters on the forks which are undamped. The original stanchions were chrome plated on the top section which I believe is standard for Clubman bikes.
The battery tray is the wire clip type without the pressed section for an air filter mount.
The gaiter clips were the flat steel type with the hexagon pins.
It was pretty much all there except for the rear guard and a pear shaped badge tank but I got the original beaten up tank with it which I have since had repaired and fitted.
Your barrel is the rare late type, supposedly only fitted to the RGS.
There weren't many of them sent to Australia, I have been told only six, but three of them came to my home town of Newcastle, two in 1962 and one in 1963. Mine is 1962, the other one was around in the late 60s and I believe that the owner took it to Queensland. The 1963 is also still here.