Originally Posted by
Stenavpix
Boy, you guys are good! I'm learning so much! Thank you. Here's the shifter on mine, I see it's GB patent, the one on that one says US. How do you know which is correct?

I think that shifter is a model GC3B that first appeared in 1956. The patent number and stamping location are consistent with that date. It was used until the early 1960's
AFAIK.