1966 Coronet SW, What are they called and what are they worth?

[elephantengine]

Hi. I have a pair of air foils,louvres,wings..etc. Everyone seems to have a different opinion as to what they are called. These are pieces that went on either side of the tailgate on a 66 Coronet stationwagon at the top corners.Are they for other makes,models,years? I have never seen any for sale so I'm wondering what I should ask for them.

 

[Richard Cranium]

Looks like 20 bucks (or best offer) to me.