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Seiko Ashtray 7c46-6010 stripped crown lock

2103 Views 16 Replies 11 Participants Last post by MediumRB, 5 mo ago

Sargeguy

Hello,

I recently acquired a Seiko 7c46-6010 “Ashtray” in overall nice condition EXCEPT that the crown lock is stripped.

Considerations:
-Watch is titanium
-Watch was only made for a short time in the 1980s and is extremely rare. New cases are unobtainable
-Seiko Japan serviced it last year but could not repair the crown lock.
-I know that “a competent watchmaker should be able to drill it out” except that all the ones I’ve asked have declined.
-I realize that “you never had a problem with a screw down crown” but the previous owner of this watch did, and it’s my problem now. It also seems to be a fairly common issue with this watch.

I am looking for someone who has experience fixing this sort of problem and is willing to take it on.

Thanks,
Greg

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MediumRB

· #17 · 5 mo ago

Glad that it might just be the crown threads (crowns are available, but neither easy nor cheap to source).
I had the SS Ashtray Tuna and the tube was stripped. For awhile, I just took the spring out of the stem and used it as a push/pull crown and it was fine operationally, but I was very unsettled about that. My watchmaker in Seoul fixed the tube threads after I acknowledged the risk involved, so all worked out in the end. But if it had been titanium...well, maybe get a new stainless crown tube and just epoxy it in place to the case or get a proper fitted fixed stem and forget that it was ever screw-in.

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