Omega Speedmaster 125

From Chronopedia

Omega Speedmaster 125

The calibre 1040 was the first self-winding chronograph movement used by Omega and calibre 1041 was chosen for and only used in a commemorative edition celebrating the company's 125th anniversary. See Omega Speedmaster 125. Exclusively produced for Omega by Lemania.


The OMEGA Speedmaster 125, introduced in 1973 to celebrate 125 years since OMEGA’s foundation, was the world’s first chronometer-certified automatic chronograph watch. It was not a revolution but an evolution from the original Omega Speedmaster of 1957. The Speedmaster Professional reference ST 145.022 was not seen as the future by OMEGA. They had steadily been new versions of the Speedmaster, starting with the Mark II in 1969, still with caliber 861, and had gone automatic in 1971 with the Speedmaster Mark III.


The Speedmaster 125 was special. as seen in the specifications.

  • The Case - massive, milled single piece of steel, with vertical brushing and highly polished bevels.
  • The Bracelet - specifically made for the Speedmaster 125, is fully integrated into the case, and is much more substantial than other OMEGA bracelets of the era.
  • The Dial - Ω logo is applied steel, as are the numerals in 125 and the letters in OMEGA. The letters and numerals are applied individually and not as a single, connected piece.
  • The Movement - Cal 1041 and not the same caliber 1040 movement as found in the Speedmaster Mark III. The 1041 movement is identical to the 1040 in functionality and finishing, and the movement itself only differs cosmetically on three parts. The differences are in the text stamped on the rotor and bridges. The movements were submitted for and passed chronometer testing.
  • The Price - The Speedmaster 125 was $425 at launch in 1973, a near 90% premium over the Omega Speedmaster Professional.
The 1041 movement was never used in another watch.