Givenchy Dress Watch Quartz
Note the 3M Magic Scotch Tape
to prevent marks from opening the watch. I also marked the exact location of the groove. This is a very common position to find an opening help: either at 5 o'clock or at 7 o'clock. At times this can help to get the back off more easily because it makes sure your opener is at the right position and has less risk of slipping out of the groove. Slipping openers are probably the first reason for watch backs to be "butchered" and marked.