1930s Seikosha Pocket Watch
Record status
Individual type · partial
Period
circa 1930s
This open-face pocket watch by Seikosha is estimated by the source to date to the 1930s. It features a 50 mm SKS case fitted with a mineral glass crystal. The cream-toned dial displays black Arabic numerals alongside an inner chapter ring of red 24-hour indicators and a subsidiary seconds register positioned at 6 o'clock.
The watch is powered by an unjeweled manual-wind Seikosha movement noted for an unusual keyless works design. According to the seller, the timepiece was serviced in January 2023.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Case
- SKS
- Type
- Open-face pocket watch
- Crystal
- Mineral glass
- Case Size
- 50mm
- Service Date
- Jan 10, 2023
- Serial Number
- 15389
- Place recorded
- Japan
- Maker / attribution
- Seikosha
Design
- Visible features
- • Light-colored dial with prominent black Arabic hour numerals and an inner 13-24 hour track printed in red. • Subsidiary seconds register at 6 o'clock featuring black markers and a red '18'. • Blued steel hands including a spade-tipped hour hand. • Winding crown and bow positioned at 12 o'clock on a metallic open-face case. • Dial signed 'SEIKOSHA' below the 12 o'clock position.
- Dial and Case Configuration
- The timepiece presents an open-face metallic housing specified by the seller as an 'SKS' case measuring 50 mm, fitted with a mineral glass crystal. A pendant winding crown and attached bow are situated at the 12 o'clock position on the case perimeter. The light-colored dial features prominent black Arabic hour numerals, encircled internally by an inner track printed in red indicating 13 through 24 hours. The dial is signed 'SEIKOSHA' below 12 o'clock and has blued steel hands including a spade-tipped hour hand. At 6 o'clock, a subsidiary seconds register features black markers and a red '18'.
- Dating and Documentation Limitations
- Attribution to the 1930s relies on informal oral communication rather than archival records. The seller recounts asking a local watchmaker who suggested that the movement design and lack of jewels pointed to pre-war production, 'most likely in 30's, with exact year unknown.' Individual tracking identifiers in the listing comprise SKU S0944 and serial number 15389. The exact placement of the serial number is not specified in the text, and internal movement views are not documented in the source images.
- Reported Movement and Mechanical Design
- The listing notes a manual movement with caliber listed as 'Seikosha', leaving the jewel entry empty in the specification table while discussing an unjeweled layout in the description. The seller describes an unfamiliar keyless works design that became displaced upon removing the wheel train bridge during disassembly, preventing photographic documentation of that mechanism. The seller also reports a service completed on January 10, 2023, noting wear and tear on parts without rust.
Identification
- SKU
- S0944
- Serial number
- 15389
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: Dating to the 1930s relies on seller communication with a local watchmaker rather than factory archival records.
- Research required: Internal movement and case back details are described by the source but are not visible in the primary photograph.