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The Encyclopedia of Horology

Wristwatch · Chronograph

Omega Speedmaster Professional Ref. 145.022

Partially verified

This Omega Speedmaster Professional, reference 145.022, is a hand-wound chronograph wristwatch. Introduced in the late 1960s as a successor to the reference 145.012, this model marked the transition from the calibre 321 to the calibre 861 movement. The 42 mm stainless steel case features a "Straight Writing" case back, characterized by the linear engraving around the Seahorse medallion. The black pie-pan dial includes white printed text and aged yellow lume. The watch is fitted with a tachymeter bezel containing the "dot next to 90" detail. The handset remains original in style, though the hands have been relumed with Super-LumiNova. The piece is accompanied by a Bulang & Sons Racing Brown leather strap. The auction description reports that the movement was fully serviced by their watchmaker.

Omega Speedmaster Professional Ref. 145.022 with brown leather strap
Omega Speedmaster Professional Ref. 145.022 with brown leather strap — Bulang & Sons. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.bulangandsons.com
Category
Wristwatch · Chronograph
Maker / attribution
Omega
Reference
145.022
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
1970
Source-reported place
Not established
Source-reported serial
3219xxxx

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

The watch is housed in a 42 mm stainless steel case, which retains much of its original factory finishing. The black pie-pan dial features white printed text and yellow-patinated luminous material. The handset is of the original style, although the auction description reports that the hands have been relumed with Super-LumiNova at a later stage, matching the dial's patina.

The external tachymeter bezel displays the "dot next to 90" configuration and has faded to a grey tone. The case back features the "Straight Writing" engraving, denoting the specific arrangement of text surrounding the Seahorse medallion.

Evidence for this section
  • “42 mm steel case”
  • “The pie-pan dial is in very nice condition, with crisp white printed text and beautifully aged, yellow-patinated lume.”
  • “the hands have been relumed with Super-LumiNova at a later stage.”
  • “the highly sought-after “Straight Writing” versions, named for the clean, straight arrangement of the engraved wording surrounding the Seahorse, or Hippocampus, medallion.”

Movement

This reference utilizes the calibre 861, a manually wound, cam-actuated chronograph movement. This calibre replaced the earlier calibre 321 in the late 1960s production run. According to the auction description, the movement serial number is 3219xxxx, which dates the watch to 1970.

The watch has undergone service by the vendor's watchmaker and remains in functional condition.

Evidence for this section
  • “it marked the transition from the famous calibre 321 to Omega’s new calibre 861”
  • “Movement Serial 3219xxxx dating to 1970”
  • “Fully serviced by our watchmaker”

Provenance and Configuration

The watch is currently paired with a Bulang & Sons Racing Brown leather strap. The vendor notes that this strap was designed with the aesthetic of 1960s Speedmaster straps as a reference.

The watch is identified as a representative example of the 145.022 reference, which follows the historical development of the Speedmaster model line through its transition into the calibre 861 era.

Evidence for this section
  • “We have paired this Speedmaster with one of our Bulang & Sons Racing Brown Speedy leather straps”
  • “A proper old-school Speedmaster with plenty of character and a wonderful connection to the early calibre 861 era.”

Open research questions

  • To what extent does the reluming of the hands impact the originality of the dial assembly?
  • Are there specific production batches for the 145.022 that verify the 1970 dating based on the 3219xxxx serial range?

Source evidence

Recorded claims and source quotations for Omega Speedmaster Professional Ref. 145.022
FieldSource-reported valueSource quotation
MakerOmega“Omega Speedmaster Reference 145.022”
Reference145.022“Omega Speedmaster Reference 145.022”
MovementCalibre 861“Cal 861 hand wound movement”
Movement Serial3219xxxx“Movement Serial 3219xxxx dating to 1970”
Case Size42 mm“42 mm steel case”
Case Back TypeStraight writing“Straight writing case back”
Bezel DetailDot next to 90““Dot next to 90 “ tachymeter bezel faded to a grey tone”

Visible details

  • Pie-pan dial with aged lume
  • Tachymeter bezel with dot next to 90
  • Perforated brown leather strap
  • Three-register chronograph layout

Research qualifications

  • Hands have been relumed at a later stage
  • Date is attributed to 1970 based on movement serial number

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

Consulted source

ساعت مچی کرنوگراف Omega Speedmaster Professional رفرنس 145.022 نسخه Straight Writing

Reviewed 2026-11-02 · Record c4c6a5d55d

Terms in this record

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

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