This Hamilton W10 Royal British Army is an authentic military field watch issued to the British Armed Forces in 1973. Built to the Ministry of Defence specifications, it features a 36 mm stainless steel case (excluding the crown) with fixed strap lugs, designed for maximum durability in combat conditions. The matte black dial offers outstanding legibility with luminous tritium hour markers, Arabic numerals, and the distinctive broad arrow ("Broad Arrow") military marking. It is powered by the reliable manual-wind Hamilton Caliber 649, based on the ETA 2750, renowned for its robustness and precision. A true military-issued timepiece, the W10 combines historical significance, rugged functionality, and timeless vintage appeal, making it a highly collectible watch for military and vintage watch enthusiasts alike.