Newbie wondering what year/style of bucket seats are these

Hello everyone, I posted a thread yesterday wondering if anyone had re-purposed the backs of their bucket seats. Thanks for the help so far @str12-340
My car is a 1970 dart swinger that originally came with a bench seat and an owner previous to me switch it out to bucket seats. I was originally looking for a repair for the backs of the seats as the paint is flaking/ chipping off. I was hoping I could sand them and paint them to get me by for the intern.
I was just wondering if anyone had any idea what year my seats are from incase I have to order new seat backs for them!
In the photos attached you can see the seat back push button and that the hinge covers are metal! I’m not sure if this needed but my car originally is a low level slant 6 from Alberta, Canada

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