From a 1946 Chevy 3/4 Ton.
These two hubs fit the front spindles of a 1946 3/4 Ton (8 lug).
Each requires a different brake drum.

Which are original equipment (if either)?
Why are they different? i.e. Where did they originate?

http://s1346.photobucket.com/user/hokie62/media/mail-5_zpsfe41e6b0.jpeg.html


Grease magnet