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The Encyclopedia of Horology

Wristwatch · Electronic tuning fork wristwatch

Universal Genève Unisonic Tuning Fork Wristwatch

Partially verified

Dating to the 1970s according to the seller, this Universal Genève Unisonic wristwatch features a 34 mm tonneau-shaped case in 10-karat yellow gold electroplate with a brushed fixed bezel and a stainless steel caseback. The silver-champagne textured dial bears applied dual-tone hour markers, matching baton hands, a black central seconds hand, and a day-date window at 3 o'clock. Below 12 o'clock sits a combined Universal Genève and Accutron tuning fork emblem. The seller reports that the watch is powered by a 15-jewel caliber 1-53 tuning fork movement operating at 360 Hz with an electrical hack mechanism, and it is fitted to a black crocodile-grain strap.

Front view of the Universal Genève Unisonic wristwatch showing dial, day-date window, and brushed bezel
Front view of the Universal Genève Unisonic wristwatch showing dial, day-date window, and brushed bezel — Secondhand Horology. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
secondhandhorology.com
Category
Wristwatch · Electronic tuning fork wristwatch
Maker / attribution
Universal Genève
Reference
553105
Catalogue / lot identifier
WA-3504
Source-reported date
1970s
Country
Switzerland
Source-reported serial
2 831 487

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

Case Construction

This timepiece features a tonneau-shaped case measuring 34 mm in diameter, constructed of 10-karat yellow gold electroplate with a stainless steel caseback. The fixed bezel features a brushed finish, and the case is fitted with a signed Universal Genève crown at the 3 o'clock position.

The timepiece is fitted to a black crocodile-grain strap. Per source measurements, the case thickness is 11 mm with a lug width of 19 mm.

Evidence for this section
  • “cased in a 34mm tonneau shape polished-finish case and brushed-finish fixed bezel”
  • “Case and bezel in 10KT yellow gold electroplate and stainless-steel back”
  • “Original signed Universal Geneve crown”
  • “Case Thickness 11”
  • “Lug Width 19”

Dial and Branding

The watch features a silver-champagne textured dial equipped with a day-date window at 3 o'clock. Applied markers are black and gold with luminous dots, paired with gold and luminous baton hands and a black sweep seconds hand.

A combined Universal Genève and Accutron tuning fork emblem is present on the dial below the 12 o'clock marker.

Evidence for this section
  • “original silver champagne textured dial featuring black/gold hour marks, luminous dots, gold/luminous matching hands, and a black sweep second hand”
  • “The dial is signed with the marriage artfully denoted by the unique UG/Accutron logo”
  • “The day/date window is located at 3 o’clock”

Movement and Technical Specifications

The watch is listed as housing a 15-jewel, 360 Hz tuning fork caliber 1-53 movement. The source reports that the movement features an electrical hack function and identifies the caliber as being based on the Bulova 2182F.

Technical claims regarding the internal movement and caliber origin are based on seller information; internal components were not verified by external visual inspection.

Evidence for this section
  • “electronically controlled tuning fork movement caliber 1-53 (based on the Bulova 2182F), 15 jewels”
  • “unadjusted, 360Hz, Swiss made”

Open research questions

  • Can the caliber 1-53 be independently verified as a Bulova 2182F derivative?
  • What is the correlation between the serial number 2,831,487 and the production timeline of Universal Genève Unisonic models?

Source evidence

Recorded claims and source quotations for Universal Genève Unisonic Tuning Fork Wristwatch
FieldSource-reported valueSource quotation
Movement CaliberUniversal Geneve Cal. 1-53“Universal Geneve Cal. 1-53 Unadjusted 15 Fifteen Jewels Swiss”
Jewel Count15 Jewels“15 jewels, sweep second, day/date”
Reference Number553105“Ref. 553105 Wristwatch”
Case Number2 831 487“553105 2 831 487”
Case Material10KT Gold Electroplate with Stainless Steel Back“10KT Gold Electroplate Stainless Steel Back”
Frequency360Hz“unadjusted, 360Hz, Swiss made.”
Case Diameter34 mm“cased in a 34mm tonneau shape polished-finish case”
Case Serial2 831 487“2 831 487”
Reference Number553105“Ref. 553105”

Visible details

  • Tonneau-shaped gold-toned case with a radially brushed front bezel surface
  • Silver-toned dial with applied dual-tone hour markers and combined day-date display at 3 o'clock
  • Black textured leather strap fitted between lugs
  • Combined Universal Genève and Accutron tuning fork symbol printed below 12 o'clock
  • Fluted winding crown positioned at 3 o'clock

Research qualifications

  • Movement condition, caliber identity, and caseback serial markings rely on seller description as movement and caseback interior are not visible in the primary photograph
  • Base caliber derivation from Bulova 2182F is reported by seller and unverified from exterior view

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

Consulted source

UG Accutron UNIVERSAL GENEVE UNISONIC Watch Tuning Fork 15 Jewels Cal. – SECOND HAND HOROLOGY

Reviewed 2026-10-25 · Record f4983c32f5

Terms in this record

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

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