The first one is a factory Oldsmobile sport rim. They did not make too many
chrome ones, most were painted. (I just gave two painted ones away a few
days ago, came off my old `80 Cutlass.) I think the early-mid `80's Hurst
Cutlasses had chrome sport rims like yours. The second rim is a factory
Buick. There were two style chrome factory Buick sport rims like this...
the one you have is the one most often used on the big Buicks, like the
Electras, Rivieras, LeSabres, etc. Both rims are from the `70's-`80's era
(roughly).