Hi. I would need a few more pictures to determine a realistic price, but the chronograph looks weird to me (I would pass on that). The zenith, if well priced, could be a good buy though! Maybe $200-$300? Have a nice day
All of the hands have been unsympathetically replaced on the chronograph. The hour and minute hands would have originally been lumed like the dial. The subdial hands also look odd considering the age of the watch. The Eterna Centenaire is in nice shape other than the fact that a couple of the lume dots have fallen off and are floating around the dial - you can see one of them between the hour hand and the 4 o'clock marker. I'd like to see a photograph of the caseback - I can't see any rubbing to the gold, and if the caseback is also gold in colour there's a good chance it might be solid gold. The Zenith dial looks a little stained, but it might be a discoloured crystal and the angle of the photograph. Better photographs would help.