This unit was removed from a 1980 Cadillac Eldorado that had been totaled by a rear end collision a few years ago. I purchased the car for the mint interior for one of my other Eldorados. It has 82,000 original miles on it. 

The car was immaculate. This part has been stored in heated storage since I removed it from the car. The unit is incredibly clean. The gasket is covering part of the part number as shown.

The silver accent paint is still pretty nice with a little paint wear on the bottom part of the frame where the two main control knobs were frequently used.

This part would fit the Seville for that year. 

There is a choice on postage.