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The Encyclopedia of Horology

Wristwatch · Automatic chronometer wristwatch

1958 Omega Seamaster Chronometer Automatic (Ref. 2984 1SC)

Partially verified

This 1958 Omega Seamaster Chronometer Automatic, reference 2984 1SC, is an automatic wristwatch powered by the Omega caliber 501 movement. The timepiece features a stainless steel case measuring 34mm in diameter, characterized by distinct scarab-style lugs. The watch retains its original Omega-signed crown and a case back featuring an embossed Seamaster hippocampus medallion. The dial is classified as tropical, exhibiting a patina consisting of varied tones of gold, yellow, and orange, and is signed with the Omega logo, 'Seamaster', and 'Officially Certified' text. Applied hour markers and dauphine hands are present, with the latter showing signs of oxidation. The watch is currently fitted with a handmade two-piece leather strap. It is described as a piece that has undergone a previous gentle polish, and the auction description reports that the movement has been recently serviced.

Frontal view of the 1958 Omega Seamaster featuring a tropical dial with dauphine hands.
Frontal view of the 1958 Omega Seamaster featuring a tropical dial with dauphine hands. — Craft & Tailored. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
craftandtailored.com
Category
Wristwatch · Automatic chronometer wristwatch
Maker / attribution
Omega
Reference
2984 1SC
Catalogue / lot identifier
OMSM29841
Source-reported date
1958
Source-reported place
Not established
Source-reported serial
16XXXXXX

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 Movement

The watch is housed in a stainless steel case measuring 34 millimeters, which the auction description notes is distinguished by its scarab-style lugs. This case design has been subject to a gentle polishing process at an unspecified point in its history. The original crown remains attached to the case, and it features the official Omega signature.

Internally, the timepiece operates using an automatic-winding caliber 501 movement. The case back is embossed with a large Seamaster medallion, which depicts the model's signature hippocampus logo, and retains original factory markings.

Evidence for this section
  • “The beautiful and whimsical scarab lug case has been gently polished in the past”
  • “The case retains its original Omega signed crown.”
  • “The ref. 2846 10SC is powered by the in-house Omega cal. 501 automatic winding movement”
  • “The case back retains all of its original factory marking and the large Seamaster medallion is in excellent condition.”

Dial and Hands

The dial is characterized by what is described as a tropical patina, featuring a palette that includes gold, yellow, and bright orange. It bears the applied Omega logo, the text 'Officially Certified', and the 'Seamaster' name.

Surrounding the dial are original radium dauphine hands that show oxidation. The luminous material contained within the hands has shifted to a black coloration as a result of age, and the radium lume plots located around the dial perimeter remain in situ, despite experiencing some degradation.

Evidence for this section
  • “The stunning applied logo dial boasts a vivid tropical patina that consists of bright orange, gold, and yellow.”
  • “The radium lume plots remain intact around the dial with some degradation present.”
  • “The original radium dauphine hands exhibit oxidation and the lume has developed a black coloration through age.”

Condition and Accessories

The auction description reports that the timepiece has recently been serviced and is functioning according to specified timekeeping standards. It is currently being sold without accompanying original box or papers, instead provided on a modern two-piece handmade leather strap.

All statements regarding the internal condition and current mechanical status are based on the reported service performed by the vendor.

Evidence for this section
  • “The watch was recently serviced and is keeping time perfectly, backed by a 1-year warranty on accurate timekeeping.”
  • “The watch will come supplied on a 2pc handmade leather strap.”

Open research questions

  • What is the specific production date range for the Omega caliber 501 movement series?
  • How does the reference 2984 1SC differ in production numbers from the more common Seamaster references of the late 1950s?

Source evidence

Recorded claims and source quotations for 1958 Omega Seamaster Chronometer Automatic (Ref. 2984 1SC)
FieldSource-reported valueSource quotation
Reference2984 1SC“Ref. 2984 1SC”
MovementOmega cal. 501“powered by the in-house Omega cal. 501 automatic winding movement”
Dial characteristicsTropical patina“the vibrant tropical dial is incredible, offering warm tones and a very rich patina.”
CrownOriginal Omega signed“The case retains its original Omega signed crown.”
Date1958“Tropical 1958 Omega Seamaster Chronometer Automatic”

Visible details

  • Case features stylized scarab lugs.
  • Dial displays significant color variation across its surface.
  • Case back features a prominent embossed Seamaster hippocampus emblem.
  • Hands show visible oxidation and darkened lume.

Research qualifications

  • The specific degree of lume degradation is unverified beyond the description.
  • The exact date of the previous polishing is not recorded.

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

Consulted source

ساعت مچی امگا Omega Seamaster Chronometer Automatic رفرنس 2984 1SC

Reviewed 2026-11-02 · Record e9326a2b1b

Terms in this record

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

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