Hot Rods Wheel id?

trolling the classifieds down here and spotted this wheel in the background. I asked , guy says “boat trailer” that’s all , but it looks interesting could be a trailer wheel or?
Edit. Yep it’s a trailer wheel

 

I've got similar aluminum wheels on my car trailer.... and they're marked 'trailer only'...

 

Could be of use to the right person with the right car. They look similar to British Austin 7 "Speedex" special wheels. You know, the little hillclimb and trial specials built around old pre-war Austin 7 chassis with souped up Ford Anglia/Prefect sidevalve 4 cyl..