About 2 and a half years ago I purchased a G Gerlach Marine watch with a dual date, which I only wore occasionally.
Last year I stopped at my nephews for a few weeks and he said what a lovely watch, so I gave it to him.
At the start of this year he rang me to say it had stopped working so as it was out of warranty, I said send it back to me and I will take it to my local watch repairer that I have used several times with no problems.
He quoted me £100 to rectify the fault and service it, after 6 weeks I called into the shop to be told the fault was a loose ball bearing that had got into the works but it was now working and had been serviced.
So I took it back home and kept it for a few days to check its time keeping, which was fine however I noticed the dual date had jumped 3 days forward, so using the button on the top left side I checked the date movement only to find every time it changed it jumped 3 days forward, so back to the shop it went, fast forward another 4 weeks and a phone call to say it is ready for collection, so I take it home, the date is the 5th so I used the side button again to change the date and when it got to 10th, 00 was showing so checked the rest of the dates and after 31 it
showed 02 instead of 01, so I wore it for a few days and then the watch stopped working, so back to the repairers again, how long it will be before they phone me to tell me it is ready is anyones guess, but after paying them £100, I want a fully functioning watch.
When it first went in the dual date was working perfectly.
One thing he did say was the date change was an unusual mechanism, but that is no excuse, has anyone ever taken one of these apart and can offer an explanation for the weird behavior of the date change.