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The Encyclopedia of Horology

Wristwatch · Chronograph wristwatch

Omega Speedmaster Ref. ST 105.002-62 Chronograph

Partially verified

This Omega Speedmaster wristwatch, identified by reference ST 105.002-62 and movement number 19583904, dates to 1963. The timepiece features a three-body stainless steel case with polished and brushed surfaces, lapidated lugs, and a screwed-down case back adorned with an engraved Speedmaster logo. It includes an antimagnetic dust cap and a black bezel calibrated with a tachometer graduation to 500 UPH. The black dial exhibits luminous baton indexes, a luminous alpha-style steel hand set, and three subsidiary registers for seconds, 30-minute, and 12-hour tracking. Internally, the watch is powered by the copper-colored Omega caliber 321 manual-wind movement. This 17-jewel chronograph movement utilizes a straight-line lever escapement, a monometallic balance, a shock absorber, and a flat balance spring with an index regulator. The watch is accompanied by an Omega link bracelet, a fitted box, and a spare JB bracelet.

Front view of the Omega Speedmaster reference ST 105.002-62 featuring a black dial and steel bracelet.
Front view of the Omega Speedmaster reference ST 105.002-62 featuring a black dial and steel bracelet. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Chronograph wristwatch
Maker / attribution
Omega
Reference
ST 105.002-62
Catalogue / lot identifier
326
Source-reported date
1963
Source-reported place
Not established
Source-reported serial
19583904

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 and Dial Details

The watch is housed in a three-body stainless steel case measuring 39 mm in diameter and 14 mm in thickness. The exterior finishes consist of a combination of polished and brushed surfaces, complemented by distinctive lapidated lugs. The case back is secured by screws and features an engraved Speedmaster logo. Inside, an antimagnetic dust cap protects the movement from external interference.

The black dial is fitted with luminous baton-style indices and an outer minute and 1/5th second track. The time and chronograph functions are displayed via luminous steel alpha-shaped hands. Subsidiary dials are arranged to display constant seconds, 30-minute, and 12-hour intervals. The black external bezel features a tachymeter scale graduated up to 500 units per hour.

Evidence for this section
  • “Three-body, polished and brushed, screwed-down case back with engraved Speedmaster logo, tachometer graduation on the black bezel to 500 UPH, lapidated lugs, antimagnetic dust cap.”
  • “Black with luminous baton indexes, outer minute and 1/5th second divisions, subsidiary dials for the seconds, 12-hour and 30-minute registers.”

Movement Construction

The movement powering this chronograph is the Omega caliber 321, a manual-wind mechanism characterized by its copper-colored finish. It operates with 17 jewels and incorporates a classic straight-line lever escapement.

Technical features of the caliber include a monometallic balance equipped with a shock absorber system. The balance assembly utilizes a self-compensating flat balance spring managed by a traditional index regulator. The movement, along with the case and dial, bears the maker's signature.

Evidence for this section
  • “Cal. 321, copper colored, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring, index regulator.”
  • “Dial, case and movement signed.”

Condition and Accessories

The auction description provides a grading assessment for the watch, assigning a general grade of AA. The individual components are assessed as follows: the case is graded as 3, the movement as 3*, and the dial as 3-12-01. The report notes that the hands are original to the watch, though the dial is described as having a tropical appearance.

The lot is sold with several accompanying items, including a fitted box, a Certificate of Authenticity, and an additional spare JB bracelet.

Evidence for this section
  • “Grading System Grade: AA Very good Case: 3 Good Movement: 3* Good Overhaul recommended, at buyer's expense Dial: 3-12-01 Good Worn HANDS Original”
  • “Accompanied by a fitted box, Certificate of Authenticity and a spare JB bracelet.”

Open research questions

  • What specific chemical or environmental exposure caused the 'tropical' discoloration on this dial?
  • Does the serial number 19583904 correspond to the specific production window of the 105.002-62 reference within 1963?

Source evidence

Recorded claims and source quotations for Omega Speedmaster Ref. ST 105.002-62 Chronograph
FieldSource-reported valueSource quotation
Movement Number19583904“movement No. 19583904”
ReferenceST 105.002-62“Ref. ST 105.002-62”
Date1963“Made in 1963”
Case FeaturesThree-body, polished and brushed, screwed-down case back with engraved Speedmaster logo“Three-body, polished and brushed, screwed-down case back with engraved Speedmaster logo”
Movement CaliberCal. 321“Cal. 321”
Dimensions39 mm diameter, 14 mm thickness“Diam. 39 mm. Thickness 14 mm.”
Auction GradeGrade AA“Grading System Grade: AA”

Visible details

  • Tachymeter bezel calibrated to 500 units per hour
  • Three-body case construction with lapidated lugs
  • Black chronograph dial with three subsidiary registers
  • Visible discoloration on the dial surface

Research qualifications

  • The dial is described as having a 'Tropical' appearance, suggesting color shift
  • The auction description reports the need for an overhaul

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

Consulted source

Tropical Dial Omega, movement No. 19583904, Ref. ST 105.002-62. Made in 1963. Fine and rare, water-resistant, stainless steel wristwatch with round button chronograph, registers, tachometer and a stainless steel Omega link bracelet. Accompanied by a fitted box, Certificate of Authenticity and a spare JB bracelet.

Reviewed 2026-10-26 · Record a50eb12edb

Terms in this record

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

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