That is a Cat wheel, with a star. MFGR'd by HPE/Muskin in Colton, CA (near LA) from 1969 to the mid seventies. Looks like it has the original tire. Clean that stuff up, and sell it, depending on condition. It's better to have things original, unless they are rusted beyond servicability. The more complete the better, but we already know that isn't the original wheel.
Post a photo of the bike and any parts, and some of the more talented experts on here will probably offer their opinion on your specific bike.