9,5 / 10
Rare model combining the 1863
Rhodium caliber and a dial with tritium markers
#48.357.xxx was produced in 1997 and is among the very last Speedmasters with tritium.
It is in excellent condition, with parts conforming to the original.
Furthermore, it is fitted wit an interesting and rare pulsometer bezel.
About the model
The Omega Speedmaster, born in 1957, is one of the most iconic wristwatches ever produced. Since 1965, it has been the choice of space programs for over half a century and has been associated with some of mankind’s greatest space adventures, earning it the name The Moonwatch.
Naturally, beyond its professional use for more than sixty years, the Speedmaster, with its incredible history and its timeless design, has appealed to a much wider public throughout the world.
In 1985, Omega introduced the first steel Speedmaster with a sapphire display caseback, associated with the caliber 863, a luxury version of the 861, with improved finish. This was a limited series of 1’000 copies, with an individual number engraved on the caseback bezel. A second numbered edition was produced in 1988-1989 with a yellow-plated caliber 863. Then, the display back Speedmaster remained in the catalogs, but in unlimited production (reference 3592.50, then 3572.50).
In 1997, Omega introduced two major changes: the rhodium-plated 1863 caliber and the replacement of the tritium luminous paint for the dial indexes and the large hands by a non-radioactive substance called luminova. During a very short period, a transitional 3572.50 was produced with the new 1863 caliber and the tritium dial/hands.
Many collectors consider it as the best of the two worlds: the more discrete rhodium-plated movement and the yellowish paint of the dial indexes.