This is NOT the real "Belle" but the one used in the movie. It was delivered to the AF in 1945 and converted to a transport version, and spent a few times in storage. In 1959 the Air Force sold her out of Davis-Monthan AFB to a metal company. It was again sold after that to another company where it was converted to a water bomber and became Tanker 78. It operated this way until 1982 when she was sold to The Military Aircraft Restoration Corporation (MARC) and converted to a -F model with the removal of the chin turret and cheek windows to resemble the "Belle". A few years later she went across the Atlantic to participate in the filming of the movie. The real "Memphis Belle" is currently being restored at the National Museum of the Air Force in Dayton Ohio. The museum offers tours of the restoration facility if you want to go there and see it.
Sorry for the rambling, but history and warbirds are my thing. Spend a lot of time reading about this stuff.