gorgeous bike! Love the box lining, the racks, the fenders, etc! So nice!
I was trying to see the details of the hubs, and didn't see anything that struck me as being unique to Hi-E. My own Hi-E hub doesn't have any markings on it, so it can be ambiguous. I have seen photos of Hi-E hubs with some adhesive labels, though.
Those aren't Phil Wood hubs on the JT, because they were well marked.
They might be Bullseye hubs?? I had one rear Bullseye hub, and I think it had a sticker on it. What was unique was that the axle was modular. The was a spacer with a set screw that allowed you to remove the axle. The axle was threaded too, to allow just using a bolt instead of a QR to attach the wheel to the bike.
Here's an old shot of the Bullseye hub that I had...
Regardless of who made the hubs, I'm intrigued by the method holding the hub to the dropouts. Some sort of "slow release" with a threaded rod that passes through the hub axle? I've got a Hi-E version of this, but it uses the standard Hi-E cone shape for the end pieces.
Steve in Peoria