The first one looks like a gold cap Constellation in good condition from about 1960/61 (based on the serial) for which the case ref is correct. These pie pan dials are sought after and it looks an original dial but, I'd need to see a face on shot to be sure. If that's good and the novement is nice I'd estimate it at £750-850 if unserviced. Having an original dial is a major factor on the price. Unfortunately, stainless sells better at the moment at probably one third more. Nice watch in my opinion and I like the 550 series calibres.
The Genėve is probably a cal 750 or 752 and I'd estimate early seventies. These are cheaper than the Constellations and an original dial (which this certainly looks like) adds to the value. For me, about £400.
Don't know the third one.
The CS looks very nice as well. These are all over the place in prices but I suspect it has a Landeron inside. It may be a gold case but these have the thinnest gold you've ever seen and a steel reinforcing ring inside. Could be wrong as I don't see these a lot but doubt it would be more than the Genėve.
Hope this helps and intereted to hear other opinions.
Cheers, Chris