Looking at this old thread, I am looking for the same answer so instead of starting a new one i figured i would ask here. My car was in pieces when i got it and i have nothing to go by.
I have learned that the rear seat back in a 1931 tudor uses the two metal clips shown more clearly in the attached image. Not my image, found it on the net.
The back of the back seat, is on the top half of this picture. The part with the radius faces up. The two brackets, on the top half, slide into a cross rail in the back of the tudor.
What do the bottom two pieces slide into? My car has nothing except pieces missing from rust.
Thanks