The Railway Pocket category describes a tightly defined class of pocket watch that grew out of American railroad safety in the late 19th century. After the 1891 collision at Kipton, Ohio, Webb C. Ball was made Chief Time Inspector, and the 1893 General Railroad Timepiece Standards took shape. To qualify, a watch had to be open-face, 16-size or 18-size, lever-set, fitted with at least 17 jewels, adjusted to five positions plus temperature and isochronism, accurate to within 30 seconds a week, and stable from 34 to 100 degrees Fahrenheit, with a double-roller escapement and the stem at 12 o'clock. The dial was always bold black Arabic numerals on white, and the lever-set design existed specifically to stop the time being changed by accident in a pocket.
The examples here are all real and still the backbone of the field. The Hamilton 992B, made from 1940 to 1969 with Hamilton's Elinvar Extra hairspring, ran past 525,000 units and was the last American-made railroad pocket watch. The 23-jewel Hamilton 950B sat above it, while Ball's own Grade 999B was built by Hamilton with a separate serial range and circular damascening that sets it apart. Elgin's B.W. Raymond, the Illinois Bunn Special and the Waltham Vanguard are the other serious names. In the 2024 to 2026 market a working 992B in a gold-filled case usually runs $400 to $800, and a Grade 992 in 10K gold-filled changed hands near $449 on Chrono24.
When buying, start with a movement that runs and has been serviced, and confirm it is genuinely lever-set, since a pendant-set watch is not railroad grade. Value tracks an original, uncracked dial, the grade marking (992B, 950B, Vanguard) on the back plate, and a case that actually belongs to the watch. This category suits the collector who values mechanical history and a repairable object with parts still available; do not expect modern accuracy, though a properly serviced example holds time remarkably well.
Beyond the vintage side, there is a modern wrist option that carries the railroad lineage forward. Ball Watch's Trainmaster line, running the 26-jewel RR1102 caliber at 28,800 vph with roughly a 38-hour reserve, is a direct continuation, with the Trainmaster Eternity listing around $2,200. You can live with the Railway Pocket aesthetic through a 1944 992B or a current Ball, depending on whether you want the original article or a wearable tribute.