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Seikosha nickel plated keyless wind open face chronograph pocket watch

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

Circa 1940

This Seikosha open face chronograph pocket watch is dated by the auction house to circa 1940 and was catalogued as Lot 101 by Bonhams Cornette de Saint Cyr. The timepiece is cased in nickel-plated metal with a pendant-operated keyless winding mechanism.

It is fitted with a black dial bearing prominent white Arabic numeral hour markers, an inner 24-hour chapter ring printed in red, white central hands, and a subsidiary register positioned at 6 o'clock.

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

Date
Circa 1940
Type
Chronograph & split-seconds watch
Maker
Seikosha
Format
Open face chronograph pocket watch
Case Material
Nickel plated
Winding Mechanism
Keyless wind
Maker / attribution
Seikosha

Design

Visible features
• Black dial displaying white Arabic numeral hour markers alongside an outer track • Inner 13-24 hour scale printed in red numerals • Subsidiary dial positioned at 6 o'clock • Pendant and winding crown with bow situated at the 12 o'clock position • Visible fine scratches or hairline marks across the crystal or dial surface
Case and Configuration
The pocket watch is catalogued with a "nickel plated" case and a "keyless wind" mechanism operated at the pendant. Visual observation confirms the open-face format, with the winding crown, pendant, and bow situated at the 12 o'clock position. Internal case markings and the exterior case back are not depicted or described in the source.
Dial Layout and Visible Condition
Observations of the dial show a black surface bearing white Arabic numeral hour markers alongside an outer track. Positioned inside the hour track is an inner 13-24 hour scale printed in red numerals. A subsidiary dial is located at the 6 o'clock position. Visible fine scratches or hairline marks appear across the crystal or dial surface.
Identity and Catalogued Classification
Catalogued as Lot 101 by Bonhams Cornette de Saint Cyr, this pocket timepiece is attributed to Seikosha and described in the listing title as an "open face chronograph pocket watch". The catalogue provides an accompanying French description noting it as a "Chronographe de poche à cadran ouvert en nickel plaqué remontoir au pendant". The auction house dates the piece to "Circa 1940". No movement caliber, reference number, or case serial number is recorded in the source text.

Identification

Lot Number
101
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: Movement caliber and internal case markings are neither illustrated nor described in the auction text
  • Research required: Case back is not depicted
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