Introduction A vintage Omega open-face pocket watch bearing the Omega name and the Omega horseshoe logo on the dial, fitted with a cream-toned silvered dial carrying bold Arabic hour numerals, an outer 24-hour railway-style minute track, and a subsidiary seconds register at the 6 o'clock position. The manual-winding movement, signed 'Swiss 15 Jewels' on the bridge, is housed in a round base-metal open-face case attached to a curb-link chain. The caseback interior is stamped with the Omega triangle-and-bird logo, 'Par Suisse / Swiss-Made', and a case number. Historical / Era context Omega established its reputation for precision pocket movements in the late 19th and early 20th centuries, supplying railway, military, and civil markets across the globe. The 15-jewel manual-winding calibre visible here is characteristic of Omega's mid-grade pocket-watch production, designed for reliable everyday service. The dial's outer dual-scale track — combining standard 1–12 hour Arabic numerals with a surrounding 13–24 hour minute ring — reflects the utilitarian, rail-influenced style common to Omega's export pocket watches of this era. No exterior caseback date stamp is present, so a precise production year cannot be confirmed from the photographs alone. Condition The watch is running at the time of listing. Case: The case shows extensive use: the outer surfaces carry dense, overlapping scratches across the bezel and mid-band, and the caseback exterior reveals significant rubbing and tarnishing with areas of contrasting tone where the surface metal has worn away. A small amount of verdigris is visible at the bow/crown junction, and a green wire repair is evident where the fob chain attaches to the bow. Overall case condition is fair with heavy patina consistent with long daily carry. Dial: The cream/ivory silvered dial retains clear legibility for all Arabic numerals and the subsidiary seconds chapter ring. Moderate overall age-toning and light spotting are visible across the dial surface, with slightly heavier discolouration toward the lower half. The 'Omega' signature and horseshoe logo remain readable. The text 'Importé de Suisse' is printed at the dial's base. Crystal: The domed mineral or acrylic crystal shows multiple fine surface scratches and some cloudiness consistent with age and use, though the dial remains legible through it. Movement: The movement is reported to be running well (稼働良好). The 15-jewel Swiss movement (serial 8555886) is visible through the open caseback and presents a clean, intact mainplate with no obvious damage observed in the photographs. Accessories: Accompanied by a curb-link fob chain with a C-hook attachment and what appears to be an old fabric/leather fob remnant secured with green wire at the bow. No box, papers, or additional accessories are present. Please review all photographs carefully for the detailed condition. Specifications Brand: Omega Model: Omega Movement: Manual winding mechanical movement Jewels: 15 jewels Case material: Chromed Case diameter: approx. 43 mm Total length including crown and bow: approx. 55.5 mm Total length including bow/ring: approx. 50 mm Dial color: Cream Period: 1900-1949 Weight: approx. 67 g Accessories: Fob chain with C-hook attachment In working order: Yes Closing note A characterful, well-used vintage Omega open-face pocket watch that offers genuine Swiss horological heritage in a robust, honest condition — ideal for the collector who appreciates originality over cosmetic restoration. Please examine all photographs carefully to assess condition before bidding. As with all vintage timepieces, please examine the provided photographs carefully to satisfy yourself with the condition before bidding. The watch is sold as a vintage collectible; long-term accuracy, water resistance and future maintenance are not guaranteed. The item is carefully packed and shipped from Japan with tracking. Import duties, taxes and customs charges are the buyer's responsibility. Ref. A642