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  1. tony22 Apr 7, 2017

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    Hi all. I have a Constellation for which I'd like to get an authentic crystal. I have the case back number - 166.005, but I suspect my Constellation is a bit of a franken so I'm not sure if that will entirely help. The case is SS, and my calipers measure 1.230", 31.242mm, as the crystal diameter at least as I can measure it while it's mounted. If I could get some help narrowing down the possibilities for the correct crystal and matching silver ring I'd appreciate it.
     
  2. Peemacgee Purrrr-veyor of luxury cat box loungers Apr 7, 2017

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    IIRC there are some 70s Connies without chronometer designation
    Is the case back definitely 166.005? (As opposed to 168.005)
    There are only so many Connies case styles so pics of the case should help our resident watchmakers help you
     
  3. tony22 Apr 7, 2017

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    I'll have to get pics once I get home. It's a chronometer - there's a 561 under the hood and the dial is labeled correctly.
     
  4. Peemacgee Purrrr-veyor of luxury cat box loungers Apr 7, 2017

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    In that case it'll be a 168.005 dogleg (or should be)
    You should be able to find the correct crystal on cousins or ofrei
    Still post pics though as we've seen a couple of case back swaps recently
     
  5. tony22 Apr 7, 2017

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    Right. That's what I think happened to me - a case back swap.
     
  6. M.C.B1974 Apr 7, 2017

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    Hi,
    For case number 168.005 you will need a 063pz5015 crystal.
     
  7. Peemacgee Purrrr-veyor of luxury cat box loungers Apr 7, 2017

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    No doubt good info but we just have to see what case the OP actually has if he thinks the case back has been changed for an incorrect one
     
  8. M.C.B1974 Apr 7, 2017

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    It would best to see a picture of the case style to say if it is a 166.005 or a 168.005 or something else all together.
     
  9. tony22 Apr 7, 2017

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    Thanks M. C., but I think that's why my case is a franken. The 5015 I think is 1.204" in diameter. The one fronting the watch right now is 1.230".
     
  10. tony22 Apr 8, 2017

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    Okay. Here are the pics. You'll note the existing non Omega crystal has no ring, and that the face is marked "CHRONOMETRE" and not "CHRONOMETER". I've seen other Constellations marked this way so I'm not sure, but I think it might be okay. It was sold from within Germany by someone who (I'm told) purchased it from a private owner.

    _MG_1650a.jpg _MG_1652a.jpg _MG_1654a.jpg _MG_1648a.jpg
     
  11. Peemacgee Purrrr-veyor of luxury cat box loungers Apr 8, 2017

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    Well I'm jet lagged so only going to say it's definitely the wrong case back
    Looks like late 50s early 60s lyre shaped lugs
    Others better versed will no doubt chip in with good info on case style
    The movement looks silver - has the finish been removed or is it just the lighting?
     
  12. M.C.B1974 Apr 8, 2017

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    The dial looks refinished to me, There are better qualified members on here who will be able to say for sure if it is a redial or not.
     
  13. M.C.B1974 Apr 8, 2017

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    It might be a case reference 14393?
    The crystal for the case reference would be 063pz5140, you can cross reference that crystal size.
     
    TNTwatch likes this.
  14. tony22 Apr 8, 2017

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    It's just the lighting. The movement is the correct color. Thanks M.C. I'll take a look.
     
  15. TNTwatch Apr 8, 2017

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    The case looks and fits cal. 561 exactly like ref. 14393, but the crystal for this ref is only 29.64mm. No way a 14393 can fit a 31mm crystal which is even bigger than that of the bigger case 168.005. What is the diameter of this case?

    IMO, the easiest way for this watch is to be used as parts only. To make this watch right at least an original dial and a correct caseback are needed, but then the case is already too worn out to merit the effort and time required.
     
  16. tony22 Apr 8, 2017

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    Ugh. My search for a Constellation continues. :-(

    Do you need the case inner diameter, or outer?
     
  17. TNTwatch Apr 8, 2017

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    Ref 14393 has the outside diameter of 34mm. You can check yours to confirm.

    (Also measure the largest diameter of the case back just to make sure your caliper is not off.)
     
  18. tony22 Apr 8, 2017

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    34.29 mm without the crown.. The crown is 1.778 mm thick.
     
  19. TNTwatch Apr 8, 2017

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    That looks like you have ref 14393 mid case. Are you sure it currently has a 31mm crystal?
     
  20. tony22 Apr 8, 2017

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    Let me measure again...

    Well, near as I can get to the edges of the crystal while it's still in the case, I get 1.145" or 29.083". So my initial measurement was off. Within the range of variation it does seem like this is a 14393.