How about re-chroming your existing hubcaps?
Livening up those wheels will make your trailer look vintage and cool instead of just old. It’s a great idea! Although I have no idea where to get them.
Those are just Baby Moons, you can get them anywhere
Amazon has a few. Not knowing what size and all, I can’t say if they are the correct ones, but you might try.
I dig the hell outta that


