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buddyguy
·I finally got my grandfather's vintage centenary serviced! After many years of sitting in a box, I finally decided to give it some new life so I can wear it special occasions. After many years of delay, the Omega specialist in my area said they couldn't get the original parts to service this watch. Since I am in Japan a couple times a year to visit in-laws, I decided to bring it to a place in Tokyo.
The movement (Cal.30.10R.A.PC) was overhauled. For an 80 year old watch, I was surprised so few parts needed to be replaced. I don't know the watch's service history and didn't ask if they could tell when going through the overhaul. Only the winding wheel screw was replaced (with a genuine stock part) and the hairspring corrected.
The shop shared some timegrapher measurements. I was surprised to see such a large variance between dial up, crown down and dial down positions.
Rate (Timegrapher)
Dial Up: +3.0 sec/day
Crown Down: +21.4 sec/day
Dial Down: +13.0 sec/day
Is this within the range of acceptability for a vintage bumper watch with almost all original parts? I can ask for more details on the timegrapher if these numbers warrant further review and the watch may need additional work. The shops service center is outside of Tokyo, so it's an additional back and forth trip for a watchmaker to look at.
The place kindly shared a bunch of photos throughout the process:
Before Overhaul
After Overhaul
Parts:
The winding wheel screw that was replaced
Watch face, no crystal: no work was done on the watch face or case.
Watch before it was serviced:
This Centenary isn't as in good condition as the ones posted here, but it's nice to get it into a wearable state.
The movement (Cal.30.10R.A.PC) was overhauled. For an 80 year old watch, I was surprised so few parts needed to be replaced. I don't know the watch's service history and didn't ask if they could tell when going through the overhaul. Only the winding wheel screw was replaced (with a genuine stock part) and the hairspring corrected.
The shop shared some timegrapher measurements. I was surprised to see such a large variance between dial up, crown down and dial down positions.
Rate (Timegrapher)
Dial Up: +3.0 sec/day
Crown Down: +21.4 sec/day
Dial Down: +13.0 sec/day
Is this within the range of acceptability for a vintage bumper watch with almost all original parts? I can ask for more details on the timegrapher if these numbers warrant further review and the watch may need additional work. The shops service center is outside of Tokyo, so it's an additional back and forth trip for a watchmaker to look at.
The place kindly shared a bunch of photos throughout the process:
Before Overhaul
Watch face, no crystal: no work was done on the watch face or case.
This Centenary isn't as in good condition as the ones posted here, but it's nice to get it into a wearable state.
