Hi :-) According to Wally Forman's "B-24 Nose Art Name Directory" there were two B-24's named Guardian Angel....one was Guardian Angel 41-29376 465th BG 781 st BS...and the other was 41-28959 465th BG 781st BS.
Wally'a book says there is a picture of 41-29376. but for 41-28959 there is NO PHOTO.
Usually when the designation is a "I I" it was the replacement for the first Guardian Angel which was lost,or salvaged due to battle damage.
Wally's book says there is a photo of 41-29376 and he gievs an email address of [url "mailto:Avibuff@aol.com"]Avibuff@aol.com[/url]. Ou might contact him and see if he will email you a photo.