[oem4me]

Those are 64-65 hubcaps. Yes, they have value as they are not reproduced and are highly sought after in good shape. Condition is everything. 1966 hubcaps are very similar and are available as repros (in chrome), so most settle for those.
It's important to note the back of cap for mounting style. Some are open on the back for wheels with "nubs", and some have added rings for wheels with clips. 1/2 ton and 3/4 ton clip wheels have different size rings. Gotta see the back to know which exact style you have.
Not that it matters much, but originally the bowtie was white in the middle of a red/orange circle.