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

Introduction

This is a Seiko Precision 21-jewel open-face pocket watch, reference 6110-0010, fitted with the calibre 6110A manual-winding movement. The large white dial carries bold Arabic numerals, blued-steel spade hands, and a subsidiary seconds register at the lower centre, with the text 'SEIKO PRECISION 21 JEWELS' and 'SECOND SETTING' clearly printed. No railway-issue stamp is present on the caseback; this is a standard-grade open-face pocket watch from Seiko's Precision line.

Historical / Era context

Seiko's Precision-grade open-face pocket watches represent the refinement of a timekeeping tradition stretching back to the Seikosha era of the early twentieth century. The 6110A calibre is a 21-jewel manual-winding movement produced at Seiko's Suwa facility, notable for its 'Second Setting' function — a mechanism that allows the seconds hand to be stopped and reset to zero for precise synchronisation, a feature valued in professional and scientific contexts. The large 62 mm case diameter and 82 g weight give this piece a commanding presence consistent with its precision-instrument lineage. No exterior caseback date or bureau stamp is present, so a precise production year cannot be confirmed from the markings alone.

Condition

The watch is running at the time of listing.

Case: The chrome-plated case shows clear signs of age and use: the mid-band and caseback exterior are heavily pitted and speckled with oxidation spots, and the plating has worn through to the base metal in several areas. There are scattered scratches across the caseback and mid-band. The bezel retains more of its polish but also shows light surface marks.

Dial: The white dial is legible with bold numerals and hands remaining easy to read. There is some patchy yellowing and minor staining visible under the crystal, particularly around the lower portion of the dial, consistent with age and moisture ingress at some point in the watch's history.

Crystal: The domed mineral crystal is present and intact but carries multiple fine scratches and scuffs across its surface, reducing clarity noticeably. No cracks are visible.

Movement: The movement is confirmed running well. The 6110A manual-winding calibre winds and sets correctly via the crown. The 'Second Setting' function is present and operational. The internal condition is described as running well.

Accessories: No chain, box, or papers 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: Automatic mechanical movement
Jewels: 21 jewels
Case material: Chromed
Case diameter: approx. 50.3 mm
Total length including crown: approx. 62 mm
Total length including crown and ring: approx. 71.5 mm
Dial color: White
Period: 1970-1979
Weight: approx. 82 g
Accessories: None (watch only)
In working order: Yes

Closing note

A sizeable and mechanically interesting Seiko Precision pocket watch with the practical Second Setting feature, appealing to collectors of vintage Japanese horology and Seiko reference pieces. 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; 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.