8R19.5 rims / tires were an option on the TF 1 tons. If they were an option on AD's then I suspect the tires would fit, as they do on my 58 3800.
They would have been 8x19.5 back then, not radial.
As far as I know 19.5 tires were not available on AD trucks, first they would have been available is somewhere around 1956.
They fit the fenders just fine on an AD 1 ton truck, both the bias ply and radial, I've run them both.
Grigg