The
Uhaul campers that were made from 1984 to 1986 or '87 originally had hubcaps. Supposedly while the campers were in the rental fleet the hubcaps were removed so that the lug nuts could be inspected easier. Most of the hubcaps were discarded so they are very rare and desirable. However, there were some other similar
Uhaul hubcaps that fit different trailers and did not fit the campers. I don't recall how to tell the difference, they were different diameters but I can't remember the specs. So if those are camper hubcaps they are worth something. EDIT: there is a good (or was) Uhaul Facebook group where I'm sure you could quickly sell them, if they do fit the campers. Or advertise them here.