Hi guys, my name is abed and I am from Norway. My wife was in Italy and she brought me back a U-boat watch as a gift even though that I usually were smaller new old-school looking watches. It was nice but I did not wear it because the straps were real leather. The paper she was given with it were not that confident inspiring, as I have read some of the threads, I have realized that the serial number is important, but no paper in the box says anything about a serial number. I need help to confirm if the watch is real or not, and to make it run again! Because I am allergic to real leather, I did not wear the watch and forgot about it, I think it worked for 7 days then it stopped, almost 8 weeks later when the new custom straps arrived and I had them on, it would not start. I had it on a rotating machine in a watch shop for 2 days and it did not help. I usually wear battery driven clocks where you just pop the back and take out the battery, so my knowledge on these watches is very small. The guys at the shop did not really know much about the watch either and after I told them what my wife paid for it, they choose that it was too much responsibility for them to try to open it when they know absolutely nothing about the make or mark. The watch is a U-boat chrono limited edition 1000 B53-08 LI046m 5ATMINOX18/10 07XX or at least that what it says on the back. Can some of you help me to fix this extremely irritating and expensive problem?