Antique Hamilton USA 1907 RAILROAD pocket watch. Grade 972Enameled porcelain dial. Arabic numerals, blued steel hands and second hand at 6 o'clock.Gold plated B&B Royal case with bezel and screw-down case back.Quality movement with 3/4 damascened plate, anchor escapement, 17 jewels, micrometric regulator, Breguet hairspring, balanced balance, safety pinion, screwed gold chatons and adjusted to 5 positions, temperature and isochronism.Bevelled mineral crystal. Measures 50 mm. in diameter.Works perfectly