NOS 1965 Cadillac rear rubber floor mats in bronze, group number 60.0491 15.306, part number 990402, these rear mats are for 1965 Cadillacs only, they do of course fit other 60s Cadillac models but this design was specifically for 1965, when I bought these years ago, the box was factory sealed, the mats still have a factory greasy armoral  type coating on them to preserve the rubber. Amazing condition and very rare to find, this style of floor mat does not come up on eBay very often and this is the only year you can't find reproductions for.