Since 1958 I have owned the subject watch (caliber 201,case 2846,ser. #1576267). I have been advised by the Swatch Group,Toronto, that the watch needs complete maintenance which should be done in Switzerland. My concern is that this maintenance would cost about $800., and based on what I paid for the watch years ago, the price of maintenance far exceeds the value of the watch. It has a gold case and stainless back. Years ago I had the original bracelet replaced as well as the stem (not Omega). All advice is welcomed!