I bought a pair of seats at Carlisle that look like yours. Hard to tell if they are exact with out more detailed pictures. I was told they were out of a 1940 Ford sedan delivery.
I can't take any pics of the bottom until tonight. But they are a wood base with big holes that are kind of randomly placed
While very similar, my 34 tudor seats do not have near as many holes in them. A few year later delivery seat seems more like it.