[Chevelle-list] what kind of seats are these

[rml438]

Iam assuming these are GM. Iam not sure what year,or even what they are out of. 
they are the same deminsions as my 70ss however they have 3 buttons in the back 
rest. and the back release is on the side instead of the back. Iam hoping 
someone can tell me what they might be worth. the covers are a little rough but 
everything else is in really good condition. I have some pictures for anyone 
who thinks they might be able to help. E-mail me for pics. Thank you Bob L.