This ones aimed more at Jack, and don’t know how I missed it before, The wheels on mine are Walter Barr wheels with the felt washer in the center of the nylon bushes. Pretty sure these are original to the mower I own, being a later production model than wce’s if the number system works that way. See pictures below. As a whole I don’t believe the nylon/felt combo was very successful as all the bolts show considerable wear and by eye the bushes are like new. (Need to find some verniers to double check, but I’m stuffed if I know where I left them) the tyre markings are also very liberal with the size, 6” on the tyre and they measure just over 140mm, which is near 3/8 inch under size at a guess, and I’m sure there’s not 14mm or just over 1/2 wear in them.
The mystery of old machines, maybe the wheels on the mower I own are original, maybe not. Nothing like a mystery
