10s vintage watch mens Omega WW1 Oficcer trench military jumbo silver case cal. 13'''From the early 10's this WWI ERA this oversize jumbo military officers Omega, manual wind movement cal. 13''', recently serviced by watchmaker Case: o Solid silver 0. 900 serial 6073993 84 , engravings on the back, namely the year 1919 o Fine condition with strong geometry o 35m without crown 43. 5mm lug to lug 11mm tickness 12mm lug width o Plexiglass in good condition Movement: o Mechanical manual wind Omega 13''' dating from year 1916 serviced by