11-29-2013, 09:45 PM
It depends.Take a look at the 6A5G stamp in the octagon on the side of the glass. If there is a date code stamped directly below such as A9M then it is definitely 1949. Also a 1949 date code on the base would probably be something like 926.
If there is no date code directly below then most likely it is 1939. Just looking at the photo and the U9 code, my best guess would be 1939.
If there is no date code directly below then most likely it is 1939. Just looking at the photo and the U9 code, my best guess would be 1939.
