Longines 15.25 – Rare Calibre Trench Watch This trench watch features the rare Longines Calibre 15.25, and stands out with its larger 40.5 mm case diameter compared to other trench watches of its era. The dial is very clean and overall in excellent aesthetic condition. This is an exceptionally rare variant with the sub-seconds positioned at 9 o’clock, a configuration seldom encountered in Longines trench watches. The watch houses the hard-to-find Longines 15.25 calibre movement and comes with a carefully crafted hand-made leather strap. The movement is in working condition, although the watch runs slightly fast. A valuable and hard-to-find piece for serious collectors.