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The Encyclopedia of Horology

Wristwatch · Hidden dial coin wristwatch

Corum 18K Yellow Gold Hidden Dial Coin Watch

Partially verified

This Corum wristwatch features an 18K yellow gold coin motif case measuring approximately 35 mm in diameter, designed around a 1907 Liberty Head gold coin cover that conceals the dial. Operating via a manual wind movement, the watch includes a yellow gold dial hidden beneath the coin cover. The case back bears Swiss hallmarks alongside 18K and 0.750 purity markings, as well as the number 122. The watch is fitted with a brown leather strap that accommodates a wrist size of approximately 7 1/4 inches, with a total gross weight recorded at 27.35 dwt.

Front view of the closed Corum coin watch showing the 1907 Liberty coin cover on a brown leather strap
Front view of the closed Corum coin watch showing the 1907 Liberty coin cover on a brown leather strap — Freeman's. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
freemansauction.com
Category
Wristwatch · Hidden dial coin wristwatch
Maker / attribution
Corum
Reference
Not recorded
Catalogue / lot identifier
107
Source-reported date
Circa 1980s
Source-reported place
Switzerland

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

Construction and Motif

The watch features a hinged outer cover utilizing a 1907 Liberty Head gold coin, which functions as a concealable dial protector. The assembly is set within an 18K yellow gold case, characterized by a reeded outer perimeter.

The case back displays specific identifiers, including the number 122, alongside Swiss hallmarks and 18K 0.750 purity markings.

Evidence for this section
  • “Hinged outer coin cover displays the profile of Lady Liberty surrounded by stars and dated 1907”
  • “Outer perimeter of the coin case features reeded edge detailing”
  • “Case back: 18K 0.750 (Swiss hallmark) 122.”

Dial and Mechanism

The movement is identified by the source as manual wind, though visual confirmation of the internal components is currently unavailable. A yellow gold dial is positioned beneath the coin cover.

The timepiece was noted as operational at the time of cataloging, but it has not been tested for long-term timekeeping accuracy.

Evidence for this section
  • “Movement: Manual wind”
  • “The watch winds, sets and runs at the time of cataloguing but has not been timed for accuracy.”

Condition and Attribution

The seller advises that the authenticity of individual components cannot be guaranteed, citing the possibility of past repairs or restorations. All lots are sold on an 'AS IS' basis.

Visible condition includes surface scratches on the gold commensurate with age and wear.

Evidence for this section
  • “The authenticity of individual parts is not guaranteed since repairs and restoration may have occurred.”
  • “Scratches to the gold consistent with age and wear.”
  • “All lots are sold "AS IS,"”

Open research questions

  • Does the number '122' on the case back relate to a documented production series for Corum coin watches?
  • What is the specific movement caliber concealed by the 1907 coin cover?
  • To what extent does the coin cover integration affect the numismatic integrity of the 1907 Liberty Head coin?

Source evidence

Recorded claims and source quotations for Corum 18K Yellow Gold Hidden Dial Coin Watch
FieldSource-reported valueSource quotation
MakerCorum“Maker: Corum”
DateCirca 1980s“Year: Circa 1980s”
Case SizeApprox. 35 mm“Case size: Approx. 35 mm”
Case Material18K yellow gold coin motif“Case material: 18K yellow gold coin motif”
Movement TypeManual wind“Movement: Manual wind”
StrapBrown leather“Bracelet/Strap: Brown leather”
Gross Weight27.35 dwt“Gross weight: 27.35 dwt.”
Case Back Stamps18K 0.750 (Swiss hallmark) 122“Stamps: Case back: 18K 0.750 (Swiss hallmark) 122.”
Gross Weight27.35 dwt“Gross weight: 27.35 dwt.”
Case SizeApprox. 35 mm“Case size: Approx. 35 mm”

Visible details

  • Hinged outer coin cover displays the profile of Lady Liberty surrounded by stars and dated 1907
  • Outer perimeter of the coin case features reeded edge detailing
  • Dark brown leather strap exhibits crocodile or alligator patterning with contrast white stitching

Research qualifications

  • The hidden dial beneath the coin cover is not shown in the provided photograph
  • Movement caliber and internal case markings are unverified as movement photos are absent

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

Consulted source

CORUM, 18K YELLOW GOLD HIDDEN DIAL COIN WATCH | Freeman's

Reviewed 2026-10-25 · Record a2b16a990d

Terms in this record

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