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These are quite common. I don't know how that make the groove. I always use Fixodrop on the cap jewels to keep the oil in place, so the grooves aren't needed. -
Yes - that type of jewel does exist and you will encounter it from time to time. I believe the groove cut into it provides an oil barrier, so lubrication cannot flow out away from the pivot. I have no idea where replacements could be bought if you needed one though. -
Hi All, I’ve been cleaning a Tissot 27B-21 movement and the cap jewels on the top and bottom of the balance are different. The bottom jewel is what I’ve seen before, ie perfectly flat and shiny when clean. The top one though looks to have what appears to be a circle near the edge. It definitely won’t clean off and almost looks to be engraved. Is this just another type of cap jewel that I’ve not seen before or is there a problem with it. thanks, Bill -
I will email them to ask for an accurate measurement; they held an in person lot viewing a few days ago that I could not attend. There is so much I don't yet know, I could not assume that no 8mm lathe exists with a spindle height >50mm.
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By RichardHarris123 · Posted
Hello and welcome from Leeds, England . No idea about Citizen but someone will advise soon.
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