Restoring Vintage Remontoir 15 Rubis Pocket Watch
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I think you are right. I can see now that the case would have been blued from new with a finish similar to the inner surfaces of the opening case back. As you say, there's no easy way to match that finish at home (obviously a home chemical blue such as the gun blue isn't quite acceptable). I will stick with cleaning with soap and water in the ultrasonic and consider the tarnish to be part of its charm. -
By Terrinecold · Posted
I can try a big tweezer the biggest I had in my set didn’t do the trick but I’ll check if my wife has some none watchmaking ones. -
By nevenbekriev · Posted
Yes, gum netal, which actually means iron. It is thick enough to be grinded in order to remove the rust pits and then polished, but it will need blackening oxidation in the end for protection from getting rusty. The watch has nothing to do with the railways, it is the same like the 'squirrel' candys - You do not really expect to find a squirrel inside... -
I think the app is misinterpreted the noise because of the extra case construction Tom -
I have just picked up a vintage soviet Zarja watch and I have been inspecting it prior to putting it on the 'to be serviced' pile. When I measured it with the timegrapher app, I found it was gaining loads of time. Taking the case back off, I find it's a tiny movement within a relatively large watch and it has a separate steel cover over the movement which presumably holds it in place against the caseback. Checking the app again without the cover, I find it is actually running reasonably well for an untouched old watch. Putting the cover and the caseback back in place and it reads as massively gaining time again. This behaviour is consistent every time I take the cover on and off. I have checked the balance cock is fixed and the screw is tight, so I assume that the cover and case back are pinching the movement in some way and making it run fast. Not sure I can see how that works because if the cover is touching the balance, surely it would make it stop not run faster? It can't be touching just the hairspring to make it effectively shorter. Placing only the cover in place or placing just the caseback in place (not even snapping it shut) both cause the fast running. Pretty sure there are a couple of millimetres clearance between the case back and the movement when the cover isn't there. I have also checked the watch, cover and case back for magnetism with another phone app but none of them seem to have an appreciable magnetic field. Perhaps I need to preemptively demagnetise and get a real compass to check them with. I appreciate that this is just an app using the built in microphone on my phone - could it be misreading a ringing / reverberation of this cover to give the wrong result? Observing the watch just running on the bench closed up, it does seem to be appreciably gaining time. I will wind it, set the time and leave it running overnight and see how it does with no cover / back in place. Perhaps I will also see how it performs on the wrist to rule out misreading by the app What am I missing here?
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