Headlight halo

What commando headlight years does the “headlight halo” fit?

1969-1970

S type and '70 Roadster only not Fastback or R type. And you need the correct S type/'70 Roadster yokes to mount the halo.

L.A.B. said:

S type and '70 Roadster only not Fastback or R type. And you need the correct S type/'70 Roadster yokes to mount the halo.

Andover Norton Parts Drawings - Andover Norton Factory Parts - Commando Parts

Andover Norton Parts are the only Norton spare parts in the market manufactured to original drawings, within the factory-approved tolerances, from the correct materials, and with the correct finish.

andover-norton.co.uk

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Good point. The top yoke has threaded bosses underneath for the upper stays, whereas the lower yoke is the same, but uses different pinch studs for the halo, shown in the earlier post. The lower nuts were unique AFAIK, self-locking with a nylon cap which seem to be pretty much unobtanium now.
I'm guessing the A-N 'S' bottom yoke is just a different colour? The 'S' yoke still has the threaded holes for the metal fork shrouds, so I'm not sure what other differences exist.