Search results for query: Is this a Patek

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  1. John Cote

    value Tiffany Waltham opera watch

    Ethan, I would love to see that Illinois 299 PL. On the Tiffany extra value issue I think this is a complex topic. I know Patek collectors to whom a Tiffany PL is considered a detriment. I am only talking about this little Waltham, which, no offense intended, is, as a Waltham, sort of an OK...
  2. Clint Geller

    Patent Regulator Catalog Your Favorite

    Ethan, regulators are known to degrade isochronism, that is, the uniformity of timekeeping accuracy over the running period. That is the main reason why many very high grade watches eschew regulators. Mechanical watches may run differently depending on how they are carried. Also, the timekeeping...
  3. Ethan Lipsig

    Patent Regulator Catalog Your Favorite

    I looked through my collection of about 300 high-grade European pocket watches to see what sorts of regulators they used. Most of them, even the highest-grade and most complicated watches, and even one "observatory" watch, had simple regulators, which implies that fancier regulators weren't...
  4. D

    In praise of the Elgin Free Sprung 367 Father Time

    1) was ignorant and could not tell that the Hamilton 992MP and Elgin 446 were bimetallic. A solid invar balance with cuts did not make sense to me and I see that there really as such thing. 2) Guillaume invented several alloys with differing horological applications. Guillaume and Anibal are...
  5. roughbarked

    hairspring collet

    I hear you. Nobody said these things could not be done. I have no idea why you would want to argue with DeweyC about it though.
  6. J

    hairspring collet

    I make every effort to clearly explained and illustrate my posts. You can critique them if you wish , but I suspect almost all are intelligent enough to evaluate them for themselves. However I can explain further. In the past hairsprings have been commercially produced for replacement by...
  7. F

    The Future of Clock Collecting

    Hello Cheezhead no doubt the invention of the quartz movement has been interesting from a economical(cheapness point of view) If we took this point of view with all artistic and skillfully manufactured things We would have plastic instead of marble Michelangelo sculptures,I am sure there are...
  8. D

    Howard N movement center pin and canon pinion

    If you have been on this forum you may recall that Patek Philippe used this in the 1860's so I am keeping this post here as an homage to European watches. To my knowledge this slot is unique it Howard. Now imagine how they made this pin and cut the slot!
  9. roughbarked

    E.Gubelin Lucerne duoplan

    Certainly for Patek Philippe but I'm having trouble finding where they made watches for JLC? http://www.nitonsa.com/index.php?id=history-of-montres-niton-sa Created by Henri Rodanet, the technical director of Etablissements Ed. Jaeger, the Duoplan was built on two levels – hence its name.
  10. vanjuxa

    E.Gubelin Lucerne duoplan

    If am not wrong E. Gubelin Lucerne been made by NITON company at this time they also made movements for Patek philippe and JLC
  11. Ethan Lipsig

    Performance Metrics

    I re-timed the five watches in the table in my first posting, this time using the microphone in a set of earplugs, as the timing app recommended. I timed each watch four times, the first three times each consisting of around 200 timing samples and the fourth at least 5x as many samples. The...
  12. Ethan Lipsig

    Performance Metrics

    I have no horological skills, nor do I intend to develop any. One of my professional watchmakers, nevertheless, suggested that I download one of the watch timing apps available on my iPhone. I therefore downloaded an app. Tonight I used it to time five watches I happened to have at home, with...
  13. D

    The jewels race: When do extra jewels make a difference in value for collectors?

    I have long believed that many makers preferred to use a metal bearing for bottom center over concerns for cannon pinion removal. If the pinion is very tight, pulling it puts a lot of thrust stress on the bearing and there is no way to avoid this. The result is a cracked jewel. I have seen...
  14. roughbarked

    The jewels race: When do extra jewels make a difference in value for collectors?

    It does depend on the materials they make the main plates from but I've seen quite a few Swiss watches banging the hands on the dial because the center was worn out.
  15. Clint Geller

    The jewels race: When do extra jewels make a difference in value for collectors?

    So they are jeweled like 18 jewel Waltham Model 1868's or the first run of AWCo Grade Model 1872's. I'm wondering why Patek, or Waltham for that matter in an earlier time, chose that configuration. Perhaps they figured that center hole jewels were basically only cosmetic anyway, so it made sense...
  16. roughbarked

    The jewels race: When do extra jewels make a difference in value for collectors?

    Haven't pulled a Patek like these down. However it could be a jewelled center? Some have endstone on escape but others don't. They all have 18 jewels. Edit: all the non-complicated manual movements. https://www.patek.com/en/collection/movements/manual-winding This watch has 27 jewels
  17. Clint Geller

    The jewels race: When do extra jewels make a difference in value for collectors?

    Jon, I'm curious to know what the jeweling configuration is on the 18 jewel Pateks. Can you say? Thanks.
  18. D

    The jewels race: When do extra jewels make a difference in value for collectors?

    To the original question, I suggest the answer is that, at least in the sales I have seen, jewel counts over 23 add to the cost significantly, especially 25 and 26 jewel watches. Value is in the mind of the owner. There is a mild bump for 24 jewel watches, but I have been "married" to mine for...
  19. P

    Ratchet wheel removal help for Omega PW 19 lignes cal. 43.15 "Very Best"

    Thanks John. Yes it looks like a motor barrel, saw similar ones on Elgin Veritas grades. But the only thing we have on top are the 3 small screws holding the chaton. Watchmaker said they don't seem to go through deeper into the ratchet wheel like the Hamilton profile view I see on your picture...
  20. G

    Identification on Ladies Philippe Watch

    What's should I do with it?

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E. Howard & Co. by Clint Geller