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The Encyclopedia of Horology

Pocket watch · Open-face pocket watch

Peter Diehl Kaiserslautern Omega Open Face Pocket Watch

Partially verified

This early 20th-century open face pocket watch features a white dial inscribed 'Peter Diehl Kaiserslautern' with black Roman numerals and red-toned inner 13–24 hour indicators. The auction catalog records an Omega movement bearing serial number 3894432 within a case stamped 'Omega 0.800'. Visually, the piece exhibits a rose-toned bezel ring over a silver-toned body, pierced hands, and a subsidiary seconds dial at 6 o'clock. Size 16 is noted in the catalog. Accompanied by an 18.75-inch metal chain with fasteners, the assembly weighs a total of 110 grams.

Front view of the Peter Diehl Kaiserslautern open-face pocket watch with attached chain
Front view of the Peter Diehl Kaiserslautern open-face pocket watch with attached chain — Mebane Antique Auction. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.invaluable.com
Category
Pocket watch · Open-face pocket watch
Maker / attribution
Omega
Reference
Not recorded
Catalogue / lot identifier
49
Source-reported date
Early 20th Century
Source-reported place
Switzerland
Source-reported serial
3894432

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Dial and Visual Presentation

The open-face pocket watch features a white dial detailed with black Roman numerals and an inner ring displaying red-toned 24-hour markers (13–24). Below the 12 o'clock position, the dial is signed 'PETER DIEHL / KAISERSLAUTERN', and running seconds are indicated on a subsidiary register positioned at 6 o'clock.

Visually, the timepiece combines a rose gold-toned bezel with a silver-toned metal case, fitted with a top winding bow and crown. Attached to the watch is a curb-link watch chain accented with decorative elements and secured by a large circular bolt ring clasp.

Evidence for this section
  • “White dial with black Roman numerals and an inner ring of red-toned 13–24 hour numerals”
  • “Dial signed 'PETER DIEHL / KAISERSLAUTERN' below the 12 o'clock position”
  • “Ornate pierced hands and a subsidiary seconds register at 6 o'clock”
  • “Rose gold-toned bezel fitted to a silver-toned metal case with top bow and crown”
  • “Curb-link style watch chain with decorative accents and large circular bolt ring clasp”

Reported Case and Movement Specifications

The catalog records the movement as marked 'Omega' with serial number 3894432. The housing is described as a size 16 case marked 'Omega 0.800', reflecting silver content reported by the seller.

An accompanying watch chain measuring 18.75 inches in length is included with the lot. Together, the combined assembly has a reported total weight of 110 grams, and the cataloguer assigns an estimated date of the early 20th century.

Evidence for this section
  • “movement marked Omega, S/N 3894432, case marked Omega 0.800.”
  • “Early 20th Century; Original, size 16”
  • “Also, has an 18.75" length watch chain.”
  • “Total weight 110 grams.”

Cataloguing Status and Observations

The auctioneer catalogued the watch in 'non working' condition, noting an overall appearance of good condition. Internal mechanical parts, specific caliber details, and inner case stamps are not visible in the front-facing photograph and rely on cataloguer descriptions.

Attribution of manufacture to Switzerland is based on the reported Omega marks on the movement and case, while the dial signature corresponds to Peter Diehl of Kaiserslautern, Germany.

Evidence for this section
  • “Overall appears to be in good non working condition.”
  • “Good, non working”
  • “Dial marked Peter Diehl Kaiserslautern with second hand, movement marked Omega, S/N 3894432, case marked Omega 0.800.”

Open research questions

  • What specific Omega caliber is installed within the case?
  • Do internal case hallmarks confirm Swiss silver hallmarks (such as the grouse mark) alongside the reported 0.800 fineness mark?
  • What was the historical business profile of Peter Diehl in Kaiserslautern during the early 20th century?

Source evidence

Recorded claims and source quotations for Peter Diehl Kaiserslautern Omega Open Face Pocket Watch
FieldSource-reported valueSource quotation
Dial inscriptionPeter Diehl Kaiserslautern“Dial marked Peter Diehl Kaiserslautern”
Movement markingOmega“movement marked Omega”
Movement serial number3894432“S/N 3894432”
Case markingOmega 0.800“case marked Omega 0.800”
SizeSize 16“size 16”
Chain length18.75 inches“18.75" length watch chain”
Total weight110 grams“Total weight 110 grams”
Operational conditionNon-working“Overall appears to be in good non working condition.”
Cataloguer date attributionEarly 20th Century“Early 20th Century; Original, size 16”

Visible details

  • White dial with black Roman numerals and an inner ring of red-toned 13–24 hour numerals
  • Dial signed 'PETER DIEHL / KAISERSLAUTERN' below the 12 o'clock position
  • Ornate pierced hands and a subsidiary seconds register at 6 o'clock
  • Rose gold-toned bezel fitted to a silver-toned metal case with top bow and crown
  • Curb-link style watch chain with decorative accents and large circular bolt ring clasp

Research qualifications

  • Movement signature, serial number, and case markings are reported by the auctioneer and not directly visible in the dial-facing photograph
  • The auctioneer catalogued the lot in non-working condition
  • Country of origin Switzerland is an attribution derived from the Omega mark reported by the auctioneer

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Sold at Auction: Peter Diehl, Peter Diehl Omega Open Face Pocket Watch

Reviewed 2026-10-21 · Record 9abf15964a

Terms in this record

Glossary explanations for terms named in this object’s record.

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