I have owned a Speedmaster Mk40 for many years. It was my first Omega. In September 2016 I had my Omega AD service this watch. They sent it off and after about 3 months it came back with a bag of parts (seals, hands, crown, pushers, misc wheels) and a two-year warranty card showing a successful pressure test to 3 BAR.
After a couple months the crown stopped turning and the watch couldn’t be wound manually though it would set fine. My AD confirmed, and the watch went back to Omega. Another couple of months go by and it comes back, but this time Omega said there was nothing wrong, though the crown was working again.
Around this time I got some new additions to the collection and the Mk40 sat in the watch box most of the time, though I did wear it occasionally. On one of those occasions this August I was at a cookout and stuck my hand into a cooler of ice water to grab a drink. Later, I noticed condensation under the crystal. I took the watch back to my AD and explained what happened and they sent it to Omega who said it required a new case and a service for $1200.00. I asked them to explain what was damaged and another month went by when my AD called and said Omega was now going to service the watch and replace the case under warranty. I asked for the old case, but they refused saying the new case would have a new serial number and they were keeping the old case and caseback. I received the watch back in late December 2018 along with another bag of parts (seals, pushers, crown, and crystal) and a new warranty card with a new serial number for my watch. 9 of the past 24 months it was at Omega being serviced for one thing or another but I’m glad to finally have this watch back. It was interesting to me that the serial number changed. I think the only original parts on the watch now are dial, movement, and bracelet.
I thought it was good of Omega to repair this watch under warranty. I’ll likely never know why it leaked but it does illustrate that even a recently serviced watch can develop water resistance issues with no outward signs.
Pic before most recent service.
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Pictures after service with new case and serial.
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