This rare vintage Longines “Trench Watch” dates from the 1920s and is a remarkable example of early 20th-century Swiss watchmaking. The watch features an elegant 18kt yellow gold case measuring approximately 33 mm in diameter, characteristic of the smaller wristwatches of the period. Its original white porcelain dial is beautifully preserved, featuring black Arabic numerals, delicate railway-style minute track and elegant blued-steel hands. The watch is powered by a manual-winding mechanical Longines movement, reflecting the precision and craftsmanship for which the manufacture was renowned. Its distinctive military-inspired design, porcelain dial and precious-metal case make it a particularly charming and collectible vintage timepiece, embodying the transition from traditional pocket watches to wristwatches.