I'd say mine matches a B at the front with the longer splined section and only partly machined shaft but a C at the rear with the snap ring groove and threaded end!!!
Its 10 spline and overall length of 32 3/8".
Seal and bearing wise hopefully it won't make a difference, its just interesting to look back 69 years and wonder if that's the original shaft as was fitted on the line or if it has since been modified or replaced or .....?
