WWII Elgin "Bomb Timer"

This is a 60-second timer that was manufactured by the Elgin Watch Company starting in 1919 and ending in 1944.
This example with serial number 42359427 was manufactured in 1943, 1 0f 9,000 manufactured in this run, and 1 of 166,800, with a total of 51 runs, manufactured between 1919-1944.
The movement is a grade 469, 16 size, 7 jewel, 60-second timer.
On the sticker on the back cover, under the large knob, reads (description in parenthesis):
OVERHAULED BY
O&R DEPT. (Ordinance & Repair Department) NAS (Naval Air Station) NI (North Island)
JAN. 63
North Island was commissioned a Naval Air Station in 1917 and called Naval Air Station San Diego (located at the end of the Coronado peninsula on San Diego Bay) until 1955. Then it was changed to, Naval Air Station North Island.
The photo of the the P-47 Thunderbolt, "CHUNKY" shown with a 2,000 pound (907kg) bomb was taken out of the book Modern Warplanes, Edited by Mike Spick. I wonder if one of these Elgin timers was used on this one!!
Thanks for having a safe landing on my post,
Dave