And to be thorough/complete, here's my passenger side code (lower right corner, readable from the inside).
Again, my truck is an August, '49 Norwood, Ohio truck. Might GM have sourced glass from different vendors for the geographically dispersed plants? It might be interesting to see if someone with original glass from a different year and/or different plant has different stamps on their glass ...
Interesting little rabbit hole you have here ...
