Denny,
As I recall, the cardboard seat back is for 5 window cabs, so you can't see the springs or backside of the seat back through the corner window.
Kent


1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix