Define valueable? All are worth north of $300 some more, I don’t spot anything over 1,500 though. Although the Connie and the first Omega... need more shots. All have a decent market but they all need a service and cleaning.
im more interested in buren-hamilton, two good brands with history. i have currently 2 really nice buren manual wind watches. buren-hamilton were among the 4 chronographs tested by nasa. buren is also part production of the famous heuer monaco caliber 11 (steve mcqueen).