c.1915 WW1 Longines Gents Trench Watch 
 
Nickel plated case which has seen wear especially the back of the case, the dial is in pretty good condition for a Watch of this age. 
Inside the case is a Swiss made movement, to set the time you will need to push a little button down as this is a pin set mechanism rather than pull the crown out. 
 
Cosmetically overall this is in good condition and working well.