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Legit check of Longines Ultra-Chron 431 Cal

  1. tancromatit Jan 28, 2023

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    Hi everyone
    Could you help me to check this Longines Ultra-chron is a legit one or not
    It use the caliber 431 with Jumbo size 37mm
    Thank you so much in advance
     
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  2. ken_hodson Jan 28, 2023

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    I'd be suspicious of the dial. It maybe the way the photo is taken, but minute markers 6-12 not clear, ultra chron text looks heavy (not crisp) and horizontal crosshair looks uneven.
    It may be ok, hard to tell. Would be one I'd want to view in person, perhaps with a loupe to be sure.
     
    Edited Jan 28, 2023
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  3. Spruce Sunburst dial fan Jan 28, 2023

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    I rather think it’s fine but I agree with @ken_hodson that the photos aren’t particularly helpful.

    The movement looks fine to me and the dial is probably okay but the caseback doesn’t have the Ultra Chron logo.

    I did have a look on Chrono24 and saw a couple with a similar caseback so, I suggest you do a bit more comparing.

    You don’t tell the price or location but it is definitely down to you.
     
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  4. X350 XJR Vintage Omega Aficionado Jan 28, 2023

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    I think the dial is OK, but the case is unattractively soft for me.
     
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  5. tancromatit Jan 28, 2023

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    Thank you su much for your response
    I won this watch from local bidding group in Vietnam. Its just 200$
    FYI, price in VN quite lower than other countries but 200$ for this Longines is still good for me. The Ultra chron should be around 250-300$
     
  6. tancromatit Jan 28, 2023

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    I just won from bidding and the watch is on the way shipping to me. Later when I recieve it, I will try to take a clearer picture
    Thank you so much
     
  7. Spruce Sunburst dial fan Jan 29, 2023

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    I think that’s an excellent price, no, a bargain, for a nice Ultra Chron.

    I hope it lives up to expectations and look forward to seeing more photos
     
  8. tancromatit Jan 29, 2023

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    Hi @Spruce
    Hi @ken_hodson
    I attached here some pictures
    Please help me to check
    Thank you so much
     
    CB23F38B-49AB-4448-872C-10C094554A96.jpeg 035062E2-E33D-464F-990C-C703206F2326.jpeg 405C0305-6034-42D0-BC7B-C361C59EC8C3.jpeg 8061D0AF-3BDA-4FE9-BE79-892F197FADA5.jpeg
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  9. Spruce Sunburst dial fan Jan 29, 2023

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    Lovely
     
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  10. ken_hodson Jan 29, 2023

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    @tancromatit These are better pictures. The dial has some degradation (or 'patina', as they say). Different lighting conditions probably makes this more or less obvious - the first photo of the three that you have posted looks nice. There is some loss of the edge of the minute markers around 9-10 o'clock...not a major deal. Scrutinising photos and zooming in does tend to bring out the worst. It'll look good on the wrist, I'm sure ;).

    For the price, I'd say it's a good buy.

    I have a slightly different version. They are a really great series of watches and interesting from a 36,000bpm movement perspective too.
     
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  11. tancromatit Jan 29, 2023

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    Thank you guys so much
    I have another question
    I heard that a 36000 beat watch would need more service than other watchs. How do you think about the cal 431? Is it need service/lubricant annually?
     
  12. Spruce Sunburst dial fan Jan 29, 2023

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    Longines have always made quality watches and, as far as I know, all watches should be good for running, regardless of whether they’re hi-beat or not.

    The only problem I’ve found with 60s/70s Longines (like yours) is sourcing replacement parts if and when they’re needed.
     
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  13. tancromatit Jan 29, 2023

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    Hi Spruce
    Thank you for your information
    Just hope mine will run for long
    Have a nice day to all of you
     
  14. ken_hodson Jan 29, 2023

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    My understanding (admittedly very basic!) Is that to maintain 36,000bpm the mainspring is under some additional tension, which in turn puts the gear train under extra force/tension, potentially meaning the components may wear out quicker...despite this I think its OK for normal service intervals.

    Happy to be corrected by anyone more knowledgeable!
     
  15. tancromatit Jan 29, 2023

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    Do you need to lubricate watch every year/2 year or just use it until it have huge interval in week/month?
     
  16. ken_hodson Jan 29, 2023

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    Nah. Just get it serviced when it arrives and maybe see what your watchmaker thinks with regards to future servicing, but yearly or even 2 yearly is likely to be overkill.
     
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