Nice find!
I did a little research on your number *2G10620*... difficult as one might expect... anyhow, it would seem apparent, Ford of Canada implemented a number system to coincide with war production, beginning Nov 1 1939 as the following excerpt implies...
An example of a Canadian Ford engine number is : 4G - 16180 - F
The '4' indicates 1943. ( 1 is 1940, 2 is 1941, 3 is 1942, 5 is 1944 etc )
'G' indicates Mercury 32.5 h.p. with 4-speed box.
'F' indicates Right-Hand drive export.
'16180' is the actual serial.
1G models ran from 1G-175 to 1G-11500 spanning Nov 1 1939 to Oct 1 1940.
2G models ran from 2G-205 to 2G-48148 spanning Oct 1 1940 to Nov 1 1941.
... so, your crossmember number goes well with the second year (1941) of wartime production and should be the same as the bellhousing number, assuming it remains original to the truck. (I'd pull that cover and find out.) If the two numbers agree, this IS your serial/VIN without question.
SGI loves it when you know more than they do...
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