Omega Speedmaster Professional ref. 3572.50 – Sapphire Sandwich – Tritium Dial
An iconic Moonwatch configuration that blends vintage charm with modern wearability. The Speedmaster ref. 3572.50 — often nicknamed the “Sapphire Sandwich” — pairs the classic hesalite front crystal look with a sapphire exhibition caseback, allowing a view of the beautifully finished Lemania-based movement inside.
This example features the highly sought-after tritium dial (“T” dial), giving the watch that warm, creamy lume patina collectors love. Combined with the applied Omega logo and step dial construction, it delivers the true neo-vintage Speedmaster aesthetic from the late 1990s.
A perfect choice for collectors who want the traditional Moonwatch feel, but with the added pleasure of a display caseback.
Technical Background
The ref. 3572.50 is powered by the manual-wind calibre 1863 — the rhodium-plated, decorated version of the legendary 1861. While mechanically identical, the 1863 features Geneva striping and polished components, made visible through the sapphire caseback.
Produced alongside hesalite-back references, the 3572.50 has become increasingly collectible due to its transitional nature and tritium lume.
Serial 48.3M production dates this watch to 1998.
Tech Sheet
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Reference: 3572.50
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Serial: 48382XXX (1998)
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Case size: 42mm
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Movement: Omega Cal. 1863 manual wind
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Dial: Black tritium dial (“T” dial)
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Crystal: Hesalite front / Sapphire display back
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Bracelet: Stainless steel Speedmaster bracelet
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Lug width: 20mm
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Condition: Excellent
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Warranty: 2-year warranty
