A true AN/AW or BN/BW in a late styled tractor with battery under the seat will 99% of the time have a longer rear axle housing and longer axle shafts. They will also have a spacer between the drawbar frame and rear axle housing.
They did not all have 42" tires. We have had several with factory 38" tires/rims.
There were NO --H tractors made after mid 47.