This British military issued, Longines with reference 5707 is a watch that is also known as reference 23088 aka ‘The Greenlander’ But the watch is best known amongst (military) watch collectors as being part of the so-called Dirty Dozen collection.  The 38mm case also makes it one of the biggest watches out of the Dirty Dozen collection, the size also makes the watch very wearable to todays standards.