Photo from William T. Larkins' Christmas card:
N6453C on 1963-Oct-20 at Columbia, CA.
Air Tanker 54E was owned and operated by B.B.Burson and Associates.
William Scarborough gives the BuNo as 64041 and points out the "deletion of the tip floats".
PBY Catalina In Action p49
(Photo courtesy of the San Diego Aerospace Museum)