Omega Speedmaster Pre-Moon - Rare DON Bezel - Calibre 321 - 105.012

Specifications

Year: 1965 
Box/Papers: No/No 
Reference: 105.012
Case size: 42mm 
Movement: Omega Calibre 321 
Crystal: Acrylic    
Strap size: Fits up to an 8 inch wrist 

History

We’re honoured to offer the legendary Omega Speedmaster 105.012 — the exact reference worn on the Moon during Apollo 11.

With its Calibre 321 movement, asymmetric case, and DON bezel, this is a true grail.

Quite simply, the best and most competitively priced example on the market. A rare chance to own history.

Introduced in 1964, the 105.012 was a pivotal evolution in the Speedmaster line. It was the first reference to feature the now-iconic “asymmetric” case, with crown guards that protected the pushers — a design that has defined Speedmasters ever since. It was powered by the revered Calibre 321, a column-wheel chronograph movement known for its robustness and reliability.

But what truly sets the 105.012 apart is its role in the Apollo program. It was one of the models officially flight-qualified by NASA in 1965 after surviving extreme testing — including high temperatures, shocks, vibrations, and decompression — tests which many other watches failed.

Most significantly, the 105.012 is believed to be the exact reference worn by Neil Armstrong and Buzz Aldrin during the Apollo 11 mission in 1969. While Armstrong left his Speedmaster in the Lunar Module as a backup for the onboard clock, Buzz Aldrin wore his 105.012 on the Moon’s surface, making it the first watch worn on the Moon.

Collectors value the 105.012 not only for its historical role, but for details like the “Professional” text added to the dial, the DON (dot-over-ninety) bezel, and its pre-moon caseback. All of these combine to make the 105.012 one of the most iconic and desirable vintage Speedmasters ever made.

Condition

Dial - The dial is in completely original and unrestored condition. It has aged beautifully over the years. 

Case - The case presents in fantastic condition, displaying minimal signs of wear and retaining its original finishing beautifully.

Crown - The crown is in perfect condition, maintaining all its original properties and functioning flawlessly in all positions.

Movement - The movement is performing exactly as it should, keeping great time and showing no mechanical issues whatsoever.

Case back - The case back is still in lovely condition showing just light wear. 

Strap - The original and sought after flat link bracelet is in nice condition for its age. 

Crystal - The crystal is in fantastic condition, showing virtually no marks or scratches, maintaining perfect clarity.

If you have any further questions about this stunning piece please don’t hesitate to contact us via either email or Instagram. 

@thewristwatcher1 

thewristwatcher1@gmail.com 

Terms of sale

International customers are responsible for customs charges when receiving a purchase.

Please note that we categorise watches as keeping good time when they’re running within +/- 10 seconds per day.

We cannot guarantee any water resistance due to the age of these watches.

Returns

Customers may return their purchased item within 14 days of delivery date as long as the item(s) are returned in the same condition as received.

International buyers are responsible for customs charges that apply when returning an item.

T1771