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29 November 2022, 08:48 AM | #1 |
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How bad is the pitting on this?
1665 pictured in the link below has pitting on the back. How bad is it? Would this level of pitting prevent the watch from being waterproof?
https://imgur.com/a/AWsInue |
29 November 2022, 09:16 AM | #2 |
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It will probably be ok for basic waterproofness if the rest of the watch is ok, but it's so hard to tell from one photo if it could be restored to original specs. Water resistance depends on many things - case-back, crystal, crown, etc.
What kind of waterproofness are you looking for? Light rain, showering, swimming, diving? Every time this question comes up, there are some members who are confident that virtually any oyster case can be restored to full waterproofness, but I will say that this has not been my experience. Yes, with new seals they can usually pass a dry test and maybe a basic 50m wet test. But it's not so easy for a vintage watch to pass even a full 100m wet test, including the final condensation test, even if the sealing surfaces look good visually. I'm not sure that everyone is having the same testing done. If I really needed a vintage watch to be fully waterproof to 100m (including no condensation on a cold crystal), then I would buy one that had already been pressure tested. Generally I'm happy if they are modestly waterproof so I'm confident that they won't be damaged if I'm caught in the rain. I do have a few vintage watches that happened to pass a full 100m pressure test, and I just consider that a bonus.
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29 November 2022, 09:26 AM | #3 |
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Water ingress can happen at the crown, crystal and caseback.
Because the crystal is pressure fitted to the case by a retaining ring, it’s important to check the plexi for cracks. Also a picture of the caseback would help. Generally most people don’t dive with their vintage watches. Sent from my iPhone using Tapatalk
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29 November 2022, 09:35 AM | #4 |
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Thanks for the feedback!
In general I wouldn't be intentionally exposing the watch to much water, so it's really just sufficient water proofness to not have to worry about ingress during the occasional handwash, rain or kids splashing during bathtime. |
29 November 2022, 09:41 AM | #5 |
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Here's a pic of the caseback: https://imgur.com/a/ICMmiHI
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29 November 2022, 09:45 AM | #6 |
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Interesting that the case-back is so clean. I usually see similar pitting on both sides, but that's good. What are the first digits of the serial?
It looks like it may have been serviced in May of this year, maybe the seller has information about a pressure test.
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29 November 2022, 09:45 AM | #7 | |
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Quote:
It is important that corrosion be removed so that the stainless steel can once again form its protectiveness. A good watchmaker can face the sealing surfaces on a lathe to ensure they are flat and sound. If the reference is historically significant and worth it, or if we are someone who simply enjoys rescuing vintage watches, the sealing surface can be machined oversized and a new sealing surface pressed in place. Some like laser welding and resurfacing if needed.
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29 November 2022, 09:46 AM | #8 |
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I think you should be fine as long as you don’t submerge it in water. But don’t take my opinion for it, especially on a $20k+ watch.
You can also get it tested. Most watchmakers have machines where they can verify waterproofing of the watch with the dial and movement out of the case. Sent from my iPhone using Tapatalk
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29 November 2022, 09:57 AM | #9 |
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Serial is 6,223,XXX
Watch was serviced back in May, but didn't pass an 8bar pressure test. It's back with my local watchmaker and we're going to try for a lower rating and also with a replacement crown, tube, crystal and gaskets. When I get the watch back I will also post some pics of the front for your enjoyment. |
29 November 2022, 10:05 AM | #10 | |
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Quote:
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29 November 2022, 10:55 AM | #11 | |
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Quote:
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3 December 2022, 09:17 AM | #12 |
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Good news! With a new crown, tube and gaskets we were able to get the watch to pass a 200m wet pressure test.
Some more pics here: https://imgur.com/a/PMX7aVC Thanks everyone for the input. |
3 December 2022, 08:09 PM | #13 |
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