Help with crystal number
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That’s a nice idea, But i’m committed to providing this site as a gift to the watch repair community as my thank you for my incredible life i’ve had in this business. Ive done well and unless my financial circumstances change then i’m more than happy to foot the bill. If circumstances do change then be assured that I will make an appeal. For now, I’m comfortable with the way things are and I am extremely delighted to remove Google Ads from this site and to stop Patreon, it feels like a major step forward 🙂 -
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From the same listing, the back side: I would guess that the back pops off rather than the front. You can see a little groove there where the caseback sits over the winding stem, rather than a case tube. Look for an indent or notch around the back. It might be possible to pry this off from almost anywhere on the back if it sits right against the rubber strap. The movement looks like it is from the Ronda RL family (015 or 115 or something? I forget which numbers have a calendar and which don't) -
I'd expect a similar notch somewhere around the rear to pop that off. -
This is a very old post but here's the 6139A Service & Repair Manual 6139A Service Manual.pdf 6138 & 6139 Repair Manual.pdf
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