I have researched and cannot find any details on these two GORGEOUS NOS Riviera center/wheel caps! Not eBay, not Amazon, not american specialty wheel caps in CA, nor unkle joes midnight hubcap supply in downtown east side Detroit... I have two. Here are separate cast numbers on the inside: 553008 20415 226790 253436 Nutt'n showzup. I plan to sell these IF they can be identified. THANQ! Wheelz, Tampa Bay
Those are Riviera "Super Deluxe" wheel covers....started in `71 and continued through at least `76 Tom Mooney
