Not mine. I had never seen these before but there are two on eBay Lower price, appears to be in best condition https://www.ebay.com/itm/275655396531 Higher price, ok condition https://www.ebay.com/itm/354835059414
Must be something from mid to late 70s. Found like 4 more on eBay so guess they aren’t that rare or wanted.
He bought that car in 1990, I was a kid but I remember it being in near perfect shape so I would guess they were original to the car.