If you click on the link in my signature it will take you to my truck build site for my 1954 3600. Jump back to page 6 and scroll down near the bottom. You should see some pics of the seat back cover piece and its mounting hardware etc. (click the pics for a larger image). It used similar style clips as were used on the door panels but with a little more tooth to them. Theres one in one of the pics.
The one on my truck came with the truck when i bought it (one owner, bought new in 54 by a farmer in Kalispell MT). And i believe it and its hardware to be original. The brown grain pattern on the cardboard matched the grain on the original seat cover.
I like the way it looks in my truck (sorry no outside pics) and you can see it through the back window and corner windows. Just covers that little bit of seat back you would see otherwise.
Hope that helps, ill try to get a pic when i pull the Old Man outta storage for the summer.
Chooglin
