Looks nice Brad, I would love to see the other side of the barrel, if it has the same S/N and steel batch stamp, and how many stars on the barrel in front of the nocks?
I am inclined to think it was a rebarrel job in '39, War was declared in September and there would have been a big rush to get every firearm up to a serviceable standard.
Just noticed the year stamp on the receiver, it is misaligned, maybe a spare one? usually the factory stamping is very straight.
Aussie48, what month and year on your barrel?