They look like Dexstar trailer rims. P/N : Am20766.
https://www.etrailer.com/s.aspx?qry=Dexstar+AM20766I used these on my one ton with a 215/85/16 (IIRC). They cleared my Canadian tie rods with about 1/2” of clearance. You lose about an inch of ride height. This combo has been great on my 1951 1 ton. I still have to rivet on my original hubcap clips, but haven’t got to it in over 1500 miles!
Here is a link of my build showing these rims. I also attached a picture of it completed. I’d use these rims again in a heartbeat. The only negative I have to say about them is that they didn’t clean off the welding spatter 100% on the backside, so there are bumps in the paint around the backside welds. This stopped me from giving a 5/5 rating. I gave 4/5.
