It is a quite wide-spread 8 days Jaeger Chronoflite aircraft clock used for various planes. They were used in RAF bombers generally and can be found with "Smiths" ( a British vendor) on the dial. Although infrequently found, they seem to show up in USA AC USAAF and USN Beau. Aer. markings equally. They also appear in USAF markings and were specified into the 1950s. According to the stamped info on the dial the clock was made for the USAF. Judging by the colour of the clock handles and digits I would say it is a clock that could be used for a USAF aircraft somewhere in between 1945-1955. Unless somebody re-painted these hands.
Below a such one for the USAF from 40' with the serial number quite close to the one of your clock.
Post War -USAF as Wurger pointed out, these clocks were generally fitted to aircraft longer endurance , thus the time of flight.
I do not have any specifics for you other than the attached spec sheet.
I agree.
Also, I have seen a such clock of the serial started with the "AF 54" that was dated on the 1954. The one begins with the "AF 53" what may indicate the 1953. The ID plates attached at the clock back look a little bit different for the early and late 40'.