1966 OMEGA Speedmaster Professional (Ref. 105.012) CAL. 321 "Pre-Moon"

 Alan Bean With An Omega Speedmaster Professional On Lunar Surface Of The Moon

(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 Omega Speedmaster Professional On Astronaut Stafford

(NASA Astronaut Thomas Stafford With two Omega Speedmaster Professional Speedmaster's During "Suit Up")

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. 105.012 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.


This Omega Speedmaster Professional ref. 105.012 dates to 1966 and utilizes the early Caliber 321 workhorse movement. The dial on the Speedmaster Professional features all of the key characteristics of an early "Pre-Moon" Speedmaster such as the outer step in the dial and the applied Omega logo, but this is also an extremely rare dial variant as it possesses smooth sub-dials which are almost never seen, making this specific model exceptionally rare and perfect for the Speedmaster collector who loves the intricate details or early Speedmaster references.


Stock # OMSPM66
Brand Omega
Style Speedmaster Professional
Model 105.012-66
Serial 249XXXXX
Size Men's
Material SS
Dial Matte Black Applied Logo
Millimeters 42
Bracelet Omega 1171 "Oval-Link" Bracelet W/ 633 End Pieces


The unpolished twisted lug case is in beautiful and original condition, displaying strong factory finishing and angles with light signs of use. The "dot over 90" bezel is also in excellent condition, showing a dark grey fade with minimal signs of previous use. The case retains its original "flat-foot" crown and pump pushers. The unpolished case back exhibits the Omega factory engraving in exceptional condition, remaining deep and crisp. The later Omega 1171 oval-link bracelet with 633 end pieces is in great overall condition and retains 17 links that show moderate stretch from use.


The matte black applied-logo "step dial" is remarkably well preserved, showing no blemishes or signs of age. The sub-dials remain in flawless condition as well. The tritium lume plots have aged to a tasteful golden patina and display no degradation when inspected under U.V. light. The original hour and minute hands have been professionally restored with tritium and have a dark coloration, the sweep-seconds hand retains its original lume which matches the dial perfectly and displays some minor degradation when inspected under U.V. light and remains stable.


None. The watch was recently serviced and is keeping time perfectly, backed by a 1-year warranty on accurate timekeeping.