I was in my stash today and peeked at a 21666 and 19666 12" 6-pole BIG motor types. Both had 65 Watts stamped in the motor tag. I then checked two 12" 4-pole small motor 24646 models that had wattage stampings in the tags. One was 60 watts and the other 64 watts. There you go. It would be logical the 21646, 27646, 29646, 73646, etc. 12" small motor 4 pole type numbers either oscillating or stationary types would be operating at similar wattage as the 24646 models.
You can thank Alex Rushing for this tip of swapping speed coils from an Emerson 4 pole small motor to a BIG motor 6 pole. He was the one who first brought it to our attention on the old website.
Regardless, if you do this swap to cheat a rewind, ALWAYS test the switch coil wired outside the fan on medium-low speeds for a good hour to see how warm the coil gets.