Seiko - Open-face Precision 21-jewel second-setting - 6110-0010 - 1970-1979

Introduction

A large open-face pocket watch signed 'Seiko Precision 21 Jewels' on its clean white dial, with bold Arabic numerals, spade-style hands, a central seconds hand, and 'Second Setting' text at the lower dial — indicating the movement can be stopped to the second for precise time-setting. The case reference stamped inside the caseback reads 6110-0010, and the movement is a manual-winding mechanical calibre. The back is plain and unengaved, with a push-button snap caseback revealing a well-finished 21-jewel movement.

Historical / Era context

Seiko's open-face 'Precision' pocket watches with the 'Second Setting' (stop-seconds) feature were produced for applications requiring precise timekeeping, and share the long lineage of Seiko large-format open-face pocket watches. The 21-jewel rating places this movement in Seiko's higher-grade pocket watch tier. The case reference 6110-0010 is stamped inside the caseback alongside 'ACRP' and 'JAPAN'. No railway-issue mark of any kind is present on the caseback or dial, so this is best described as a standard high-grade civilian open-face pocket watch.

Condition

The watch is running at the time of listing.

Case: The chrome case shows moderate wear overall: light to moderate scattered scratches on the caseback exterior consistent with normal pocket-watch use, and some minor spotting/tarnish on the mid-band visible in the side shots. The bow and crown are bright and appear intact. Case opens and closes normally.

Dial: The white lacquer dial is in good condition with strong legibility throughout; all Arabic numerals and dial text are crisp and clean. There is no visible cracking, heavy staining, or significant blemishes noted under close inspection.

Crystal: The mineral or acrylic crystal shows minor light surface scratches consistent with age and use, but remains acceptably clear with no chips or cracks visible.

Movement: The movement is running well. The 'Second Setting' function — stopping the seconds hand by pulling the crown to its second position — allows precise time synchronisation. No accuracy issues have been noted during my handling.

Accessories: No original box, papers, chain, or fob are included. Sold as shown.

Please review all photographs carefully for the detailed condition.

Specifications

Brand: Seiko
Model: Seiko Precision 21 Jewels
Reference: 6110-0010
Movement: Quartz (quartz)
Jewels: 21 jewels
Case material: Chromed
Case diameter: approx. 50.3 mm
Total length including crown: approx. 62.3 mm
Total length including crown and ring: approx. 72 mm
Dial color: White
Period: 1970-1979
Weight: approx. 82 g
Accessories: None (watch only)
In working order: Yes

Closing note

A solid, high-grade Seiko Precision 21-jewel open-face pocket watch with the prized 'Second Setting' complication, making it an attractive addition to any Seiko or Japanese horology collection. Please examine all photos carefully as they form part of the 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; 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.