1992 information from Warbird Resource Group:

Model: B-17G, PB-1W
Serial No.: 44-83868
Construction No.: 32509 (-DL)
Civilian Registration: N5237V, N6466D, N5237V

History:

Delivered as PB-1W to US Navy as BuNo. 77233
    - BOC: July 17, 1945
    - Struck off charge: ??

American Compressed Steel Corp, Dallas, Texas, USA, December, 1957-1960
    - Registered as N5237V
    - Stored as US Navy XD-2, Dallas-Love Airport, 1958-1960

Von E. Carstedt/Carstedt Air, Long Beach, California
    - Registration N6466D reserved but not used
    - Sale not completed

Aero Union Corp, Chico, California, 1960
    - Registered as N5237V

Tanker No. E15 (Ron Dupas Collection

Calvin J. Butler/Butler Farm Air, Richmond, Oregon, USA, 1963-1969
    - Flown as tanker No. E15

Butler Aircraft Co, Redmond, Oregon, 1974-1977
    - Flown as tanker No. F15, No. 65

TBM Inc, Sequoia, California, 1979-1983
    - Flown as tanker No. 65

RAF Museum, Hendon, England, December 9, 1983-1992
    - Converted back to military configuration at Sequoia, California
    - Delivered to RAF Brize Norton, England