Heyo,   My '50 deluxe has original wheels with oval shaped valve stem holes, and is wearing some very tired looking bias plys with inner tubes. one wheel rotted through completely (but still held air in the tube, haha!) so I bought a surplus 15 x 4.5" wide desoto wheel on ebay, and this wheel has a round valve stem hole. So clearly there was a year in which they changed over to round holes which should take off the shelf modern valve stems.   For running radials without inner