Hello, New to the forum... Looking for information on vintage Omega Pocket watches! I have an omega pocket watch with the following information - 17 Jewels, adj 2 positions Serial Number - 5696800 Dial side with + symbol - 26513 Below balance bridge - 17 LBSPN My primary questions are: What does the 17 LBSPN mean? I have found one resource that stated that the 'Bsp' is a quality/grade and 'L' is for Lepine and that the 17 may be the ligne size or jewel count? What does the 'N' stand for? Is there a standard caliber notation for these when trying to find parts? Hoping my image insertion worked! if not, the link is http://imgur.com/a/a9FlN Thanks so much in advance!!!!