Dunstall vs. a factory Commando?
The story goes AFAIK:
In 1967 Dunstall applied to inland revenue as a "manufactrurer" to politically qualify for "stock" catagory racing by the sanctioning body. A minimum amount of production for homoligation was required. It obviously succeeded to the angst of norton "stock/production" racers. The racing sanctioning bodies grandfathered this for one year 1968.
Protests stopped this Dunstall qualification for racing as "Dunstall" as stock/factory
My 68 Dunstall atlas may or may not qualifiy as Dunstall manufacturer, though NOC verified it was a Dunstall modified and delivered bike. I know the history of my bike back to the original purchaser from Dunstall dealership by a US military serviceman then imported to the USA.
Dunstall atlas
I would doubt any commando is other than "norton manufacture", with a possible endorsement as Dunstall shop modified then delivered as new.
Further there were many USA dealers selling parts. I had many dunstall parts on my first 1970 commado roadster. I bought the bike at the norton dealer in Hamden Connecticut. I bought all the dunstall parts at the Syracuse NY dealer. It was not a dunstall.
Knowing the sloppy US states registration laws that one can easily "convert" a norton to dunstall on paper. A Dunstall dealer modified bike imported to the US fails to in fact make it a dunstall manufactured bike.
In this case fraud is your friend for enhanced $ or bragging rights
A state title for a
commando as a dunstall is as valuable as brown toilet paper.
The only valuable paper, to me, might be the original invoice from the dunstall shop showing VIN/SN purchase. More so than the title.