I went and met the owner of that '54 Bullet last evening. It's just one of a whole fleet of really interesting old Brit iron. Mainly BSA and AJS/Matchless singles and twins, some in museum condition. The Enfield is definitely the runt of the litter, but it's no less lovely for it.
I'm unlikely to buy the bike from him, but he did offer me the ride if I want to 'compete' on it at the Vintage Trials event at the LeMay Marymount Motorcycle Days (
https://lemaymarymount.org/product/lemay-motorcycle-days-2/) upcoming (local trash collection baron built world-class car/motorcycle collection and holds annual events).
Was sort of thinking to ride my Indian Bullet in that, though not sure they'd let me, it being 'pretend old' and all, so this works out pretty well. I get the fun part of ownership, with fewer of the hassles or expenses! Of course, there will have to be some garage time, getting to know my new buddy (and the guy that owns it!), as we work to tie the swapped-in front wheel in tight (seems to be off something Spanish), or maybe put a different front end on; dude's got a bunch of Ceriani bits lying around that might work. He's built and run a number of trials-ish bikes.
I'm excited!