Dating painted dial grandfather clocks
I hope information can be added later, or errors corrected, with the help of fellow collectors so it as complete as possible. ’ (sometimes with notes as well) where I am not entirely sure about the data I’ve gathered, and I welcome any comments about the information so it can be developed and firmed up over time.Although this page covers Citizen’s mechanical divers, I appreciate that they also produced some excellent quartz models in the late 1970s, most notably the 600m rated Crystron.
I have used the images only to provide supporting information for this page.They used a 27 jewel movement from the ’52’ family (which included the much better known Crystal Seven range).My own example has a 5204 movement, so at this stage I am assuming this is used in the diver (day and date windows are laid out the same) but I add a ‘?’ since I cannot verify that and there were other 52 movement designations that had 27 jewels: 5204?
(27 jewels) Dandy Seven: Model Number: None / Case Number: 4-520688 Y Depth Rating: 120 meters Just one model was made with this depth rating – a Jet Auto Dater – using Citizen’s earlier 1120 automatic movement with its circular geared rotor, 19 jewels and date only complication, running at 18,000 bph.
Dials and case backs on the Seven Star divers are marked ‘Parawater’ or ‘Waterproof’ (export models?