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I would need the serial number of the clock's movements, rather than the case. The "Star Dennison watch case with the number 960780" refers to the watch case, but not to the watch itself.
About the other clock, you have a HS^4 navigation watch. The HS^4 Navigation Watch, was used by aircraft in the Royal Navy Fleet Air Arm, Fairey Swordfish aircraft, from 1940 to approximately 1942. . The watch was mounted on the aircraft dashboard using a bakelite holder. The watch was used for navigation purposes and the aircraft position could be calculated using the radio signal from a aircraft carrier or ground position 'Beacon North' signal.
Regarding the value of your item, I have just perform a market research of similar sold items as yours. I performed the research based upon the most recent finished auctions and private sells, so the value given is the real market value of your item. This is the only way to know the exact value of your unit.
The value will be in the range of 1,100-1,300$ for the HS^4.
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