Hamilton

Hamilton, 16S 19J Model 23, Military Chronograph

American. Serial Number: P24325. Circa 1945 (WW2 Era). Hamilton Watch Company, established in Lancaster, Pennsylvania in 1892, became a leading producer of precision timepieces for the U.S. military by the 1940s. The Hamilton Model 23 was a military-issued chronograph developed for the U.S. Army Air Forces during World War II. Introduced in the early 1940s, it featured a 19-jewel movement, central chronograph seconds, and a 30-minute register—functions critical for aerial navigation and mission timing. Its precision and durability made it a trusted tool for flight crews and a complement to the deck chronometers used by the Navy. The Model 23 reflects Hamilton's wartime contributions and its legacy in military timekeeping instrumentation. The watch was found to be running at the time of cataloguing. It has not been tested for timekeeping accuracy and may require adjustment. Signed on dial, movement, inner caseback.