I just inherited a gruen pocket watch from my father and I am trying to find information about it. My research leads me to believe that the style is 716 and the caliber is thus 370 with the mentioned 15j. I know nothing about pocket watches or how they function. The inscribed date is obviously different than the production date. Does anyone know what kind of gruen pocket watch this is and the year it was produced. Any and all info would be appreciated. Also any idea what it would cost me to restore it? Second hand has fallen off and the wheel inside which I believe controls the second hand runs smooth for awhile and then stops dead.