
Wristwatches · Wristwatch
Omega Speedmaster Professional (Ref. 145.012) Cal. 321 "Pre-Moon" W/ Decimal Bezel, 1968
- Maker / attribution
- Omega (maker)
- Date
- 1968
- Historical period
- Modern Mechanical Horology (1945 – 1969)
- Country of origin
- Switzerland
- Object type
- Wristwatch
- Stock no.
- OMSPM68-5
- Credit line
- Dealer listing, Craft & Tailored (OMSPM68-5)
- Catalogue title (original)
- 1968 OMEGA Speedmaster Professional (Ref. 145.012) Cal. 321 "Pre-Moon" W/ Decimal Bezel (English)
View the source record (dealer listing) ↗ (opens another website in a new tab)Suggest a correction
Record summary
Catalogued by Craft & Tailored (dealer), Los Angeles (stock number OMSPM68-5), this is a wristwatch by Omega, made in Switzerland, dated 1968. The Atlas places it in the Modern Mechanical Horology period (1945 – 1969) of its Wristwatches collection. The record is illustrated with 6 photographs.
Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.
Catalogue description
Dealer description — Craft & Tailored
(Alan Bean With An Omega Speedmaster Professional On Lunar Surface Of The Moon) The Omega Speedmaster Professional is by far one of our most favorite chronographs. The Speedmaster has an incredible history starting with automotive racing moving into flight and eventually to NASA and the U.S. Space Program. There are many subtle differences within the vintage Omega Speedmaster range of references that make them all slightly unique and different. (NASA Astronaut Thomas Stafford With two Omega Speedmaster Professional Speedmaster's During "Suit Up") This Omega Speedmaster transitional model Ref. 145.012 dates this specific example too late 1968 uses the earlier Caliber 321 movement. The original matte black stepped dial with applied Omega logo has achieved a wonderful patina and the bezel insert has the original dot over 90 (DON) bezel, and pre-moon seahorse case back. This ref. 145.012 Speedmaster Professional possesses a very rare bezel variant sought-after by every Speedmaster enthusiast out there, the "decimal track bezel", which is much different both functionally and aesthetically than the standard tachymetre bezel. The step dial or "Pie Pan" Omega Speedmaster's possess a charm and feel that that the new modern equivalents don't seem to quite have. The ref. 145.012 with the workhorse Cal. 321 movement is clearly built to last. The Speedmaster looks great on the bracelet as well as a handcrafted leather strap. It is one of our favorite chronographs due to its timeless design and functionality. Its versatility to be paired with the most formal and the most casual of wardrobe also makes the Speedmaster a good choice for the first vintage timepiece and or a classic daily driver. SPECS Stock # OMSPM68-5 Brand Omega Style Speedmaster Professional Model 145.012 Serial 265XXXXX Size Men's Material Stainless Steel Dial Matte Black "Applied Logo" Millimeters 42 Bracelet 2pc Handmade Leather Strap CASE & BRACELET The strong asymmetric case shows signs of being very lightly polished in the past, retaining thick and crisp lugs with factory dimensions and honest signs of use. The original and rare decimal bezel is deep black in coloration and displays only very minor signs of previous use. The case retains its original "flat foot" signed crown and pump pushers. The original "pre-moon" case back markings remain deep and fully intact. The watch will come supplied on a 2pv handmade leather strap. DIAL & HANDS The matte black applied logo "pie pan" dial is very well preserved and in beautiful condition, the dial itself shows no blemishes or major signs of age. The sub-dials are in excellent condition, showing no age or wear. The tritium lume plots have taken on a beautiful yellow coloration, under U.V. light inspection there is some consistent degradation in the lume plots which is common for early Speedmasters. The original tritium hands have aged slightly darker than the dial and match the overall aesthetic of the watch, the white paint of the hour hand does show some light chipping, under U.V. light inspection the hour and minute hands do show some light lume loss and remain stable, the chronograph hand remains fully intact. ACCESSORIES None. The watch is keeping time and functioning properly, previous service history is unknown.
Historical context
Modern Mechanical Horology (1945 – 1969)
Tool watches for divers, pilots and astronauts; electric watches anticipate the electronic age.
The classic era of the mechanical wristwatch: dive watches, chronographs for motor racing and space flight, GMT watches for jet travel, slim dress watches, automatic calendars, and the rise of Japanese manufacturers alongside Swiss, American, German and Soviet industries.
Read the period in the timelineMore wristwatches from this periodEarlier: Golden Age of Mechanical Watchmaking
Atlas type guide
Wristwatches
Bracelet watches were worn by women from the early nineteenth century — Breguet made one for Caroline Murat, Queen of Naples, in 1810–12 — but the wristwatch only became a man's instrument with military use and aviation in the early twentieth century. Between the World Wars it overtook the pocket watch; the 1920s and 1930s brought rectangular Art Deco cases, water-resistant cases and the first automatic winding systems.
After 1945 the wristwatch became a carrier of identity — dress watches, sports and dive watches, chronographs, calendars — produced by Swiss, American, Japanese, German, Soviet and Chinese industries. The quartz revolution after 1969 and the mechanical renaissance since the 1990s, including the rise of independent watchmakers, complete the story.
What to look for
- The reference number (between the lugs or inside the case back) and serial number, the starting point for dating.
- The calibre: its maker and number are often stamped under the dial or on the bridge.
- Originality of dial, hands and crown — refinished ('redial') dials are common.
- Case material marks: 18K/750, 14K/585, stainless steel, gold-filled, plated.
Dating clues
- Wire-lug cases: before c. 1925.
- Water-resistant screw-down cases: from 1926.
- Quartz movements: from 1969; sapphire crystals widespread after c. 1980.
General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.
Related records
Instruments · 1950–1976
Omega Megaquartz 2400 marine chronometer, 1950–1976
Science Museum Group, London
Instruments · 1960–1979
Stopwatch / timer by Omega, 1960–1979
Science Museum Group, London
Instruments · 1960–1979
Stopwatch / timer by Omega, Switzerland, 1960–1979
Science Museum Group, London
Instruments · 1960–1979
Stopwatch by Omega, Swiss made, single-button type reading 0 - 60 seconds in fifths and 0 - 5 minutes in minutes on subsidiary dial, 1960-79.
Science Museum Group, London
Wristwatches · 1945
Wristwatch by Eterna, 1945
Museum Rotterdam
Wristwatches · c. 1945
Breitling Premier, ref. 790, c. 1945
Antiquorum auction archive, Geneva
Wristwatches · c. 1945
Universal Genève Uni-Compax, ref. 22492, c. 1945
Antiquorum auction archive, Geneva
Wristwatches · c. 1950s
Baume & Mercier wristwatch, c. 1950s
Antiquorum auction archive, Geneva
