B-17G "Happy Gal" with odd serial number...info needed

[harrison987]

It is a known that not all nose art was recorded (I have numerous nose art photos of B-17s that are not on the lists above shown)...I also have numerous data plates from aircraft not listed on Joe Baugher's site.

I have already gone through every website known, so when I posted this, I was looking for info on what this "could be" from an outside the box perspective.

100% the tag is legit, and was written in 1945.

I am trying to determine what this "could" be, based on the limited info.

Obviously, the person writing it made a clerical error...which is why I was hoping the, "Happy Gal" would bring up something else.