one had an ohv jap others SS80 with Matchless engines, and another i forgot a 680 spring frame.
These things are bought by people who have bought into the Bullshit and investment crap and generally can't ride a bike.
I exclude people who have owned their bikes for a long time. Those get to ride them.
Jap engines were always primitive, exposed valves,pilgrim pumps, oil oil chucked all over, fragile soldered tanks.
Sturmey gearboxes not really up to the power of the Jap engines, later upright norton boxes with those silly breakable lugs and exposed linkages.
Just bought in parts like many other bikes of the era, about the only thing made in the BS works was the frame and the tank, soldered because they couldn't afford press work.
Rear hubs were Royal Enfield and I know many more war Nortons have been split just for those hubs. Faking or fiddling scrap Broughs is big business
I had one with a petrol tube sidecar that I could not get a 1000quid for, sold it into the trade at my cost. I found the owners to be as tightfisted as Vincent owners. [I must admit that todays silly prices rankle a bit].
The Brough myth is all bullshite and George Brough was a master of it.
As for ooooh Lawrence of Arabia rode them, don't get me started on the myth of that nonce.
Let those who have the money buy them, leaves more rideable bikes for the rest.
have I made my point?