Set of  four metal Pontiac hubcaps/wheel covers. They have an ink part number stamped inside of 488630 Overall diameter is 10  and 11/16. And they will fit over 10 and 3/16 hub lugs on you wheels. My guess is 1946 to 1958 although there's always a smart ass that will write me and tell me I'm wrong. $10 for the set. Cash only, no delivery or shipping. Firm price. Contact me here or leave a message at 620-792-5498. Click on my name for other oldies.