A Gold Filled Jump Hour Retrograde Open Face Pocket Watch, Modernista, 48.00 mm case diameter, engine turned silvered dial with MS monogram, Arabic numerals, steel hands, minute arch between 9 and 3 o'clock, jump hour aperture at 12 o'clock, subdial for seconds at 6 o'clock, cuvette engraved MODERNISTA PATENT, manual wind and stem set movement.Movement number: 27838. 56.50 dwts.