[cheveslakr]

Here's a TT to compare it to.......
The lug flange on the backside has a casting step on yours, where the TT doesn't. The main difference that stands out is the front side lug outer center is radiused on the TT instead of squared off. Probably some more subtleties with closer examination. The Crows of this vintage compare much closer between the Appliance and the TT, so I'm wondering if yours are AP.