This had been leased to Air Manila International by Pan Am, and was on its way to another lease to Egyptair. It had been taken over from TWA by Pan Am before delivery hence the -331 designator , outside the Pan Am hangar.
The start-up airline Bangladesh Biman (when Bangladesh was a start-up nation) got assistance from Pan Am and BOAC...this 707-331 was an early Pan Am Intercontinental 707 model with a TWA designator taken over on the production line.
Formerly TWA's N767TW and bought by Air Berlin during its formative years in 4.79, this 707 was sold to ATEL in 12.80 but scrapped a couple of months after the photo was made. The registration N767AB is now current on something called a Koelsch Waterdog (Cub on floats)