10s vintage watch mens Longines trench military WW1 13.34 servicedFrom 1916 (during the first world war) this is a remarkably Longines trench watch, powered by the manual wind calibre 13. 34. Both the movement and case share matching serial numbers, confirming its authenticity and dating it to the same era. This is a rare opportunity to acquire an exceptional example of an early 20th century Longines trench watch. Case: o Sterling Silver serial 3'414'941, was polished, minor scratches o 31. 5mm without crown 39mm