And a shot of the nose clearly showing the name Carol Jean:
To me at least, the last two digits look like "93". Going through Joe Baugher's lists, the best match seems to be 41-9093:
Problem is it ended up at Albuquerque and the info on the film I've found doesn't mention any filming there. So I looked up all the B-17Es that went to RFC at Ontario and came up with only three: 41-9068 on 10-31-45, 41-9160 on 4-11-45 and 41-9065 on 8-12-45. Of those three I think 41-9068 may be the closest to that image and it was the last to show up at Ontario; according to the book Retakes, the movie was shot April-August 1946.9093 delivered to Geiger 301st BG Apr 8, 1942; transferred to Lowry May 31, 1942; assigned 5th BG 72nd BS ("Spook!") at Hawaii
Jun 7, 1942; RETUS 2138 BU at Tyndall Dec 27, 1942; transferred to Kingman 22-Oct 22, 1944; transferred to
RFC at Albuquerque Jun 25, 1945
So my two best guesses for Carol Jean's ID: 41-9093 or 41-9068.
What do you all think?