Introduction This is a Seiko Precision 21-jewel open-face pocket watch, reference 6110-0010, fitted with the hand-wound caliber 6110A movement. The large white dial carries bold Arabic numerals, a subsidiary seconds register at the lower centre, and the text 'SECOND SETTING' — a feature that allows the seconds hand to be stopped for precise time synchronisation. The case is finished in a white base-metal plating (marked ACRP on the caseback) and measures approximately 48 mm across the case body alone. Historical / Era context The Seiko Precision open-face pocket watch with sub-seconds and 'Second Setting' capability belongs to the long lineage of Seiko's Type 19 railway-grade timekeepers, which were produced continuously from the late 1920s through the early 1970s to exacting standards demanded by Japan's rail operators. The 'Second Setting' function — allowing the seconds hand to be halted and then restarted in sync with a time signal — was a defining feature of high-grade Japanese pocket watches intended for professional use. The caliber 6110A, a 21-jewel manually wound movement, represents a mature expression of that tradition, offering excellent jewelling for reduced pivot wear and long service life. Condition The watch is running and keeping good time. The watch was checked lying flat (dial up) after a full wind. This is a spot check at the time of listing; as a vintage mechanical watch the rate in actual wear varies with position and winding state, and long-term accuracy is not guaranteed. As a vintage timepiece it may benefit from a service. Case: The case body shows scattered fine scratches across the surfaces consistent with honest age-related use. The caseback exterior is free of dents; the snap-back caseback seats firmly. The ACRP white base-metal plating is generally intact, though light wear marks are visible on the case flanks and bezel rim. Dial: The white dial is clean and highly legible. The printed Arabic numerals and dial text are crisp with no visible staining, fading, or moisture damage. Overall dial condition is very good. Crystal: The domed mineral crystal is clear and free of notable chips. There are light surface marks consistent with normal handling, but nothing that significantly impairs reading the dial. Movement: The watch is running. With the caseback opened, the caliber 6110A movement is visible — it is signed 'SEIKO 6110A JAPAN 21 JEWELS'. The bridges and mainplate show clean, well-finished surfaces with no visible damage. The Second Setting mechanism is present and functional. Accessories: No box, papers, or chain are included. The watch is offered as pictured. Please review all photographs carefully for the detailed condition. Specifications Brand: Seiko Model: SEIKO PRECISION 21 JEWELS SECOND SETTING Reference: 6110-0010 Movement: Manual winding mechanical movement Jewels: 21 jewels Case material: Stainless steel Case diameter: approx. 48.3 mm Total length including crown: approx. 60.9 mm Total length including crown and ring: approx. 71.6 mm Dial color: White Period: 1970-1979 Weight: approx. 78 g Accessories: None (watch only) In working order: Yes Timekeeping: keeping good time (checked lying flat after a full wind) Closing note This is a handsome example of Seiko's high-grade open-face pocket watch tradition, featuring the desirable Second Setting function and a well-preserved 21-jewel movement — a compelling piece for collectors of Japanese precision horology. Please examine all photographs carefully, as they form part of the item description. 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; 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.