Crystal
Speedmaster sapphire crystal (sapphire-sandwich execution)
ProbableOmega has catalogued Moonwatch references with a sapphire crystal and a sapphire display back — the 'sapphire sandwich' — alongside the Hesalite execution. This matters because sapphire on a Speedmaster is not automatically wrong: the correct question is which execution the reference was, not whether the crystal is acrylic. A sapphire crystal on a reference catalogued with Hesalite is a substitution to record; a sapphire crystal on a reference catalogued with sapphire is the watch as it left.
Part reference
- Brand
- Omega
- Material
- Sapphire
Documented variations
Classification
FactoryDocumented as shipped from the factory for this reference and period.PeriodNot original to this watch, but correct for its production period.ServiceFitted by the manufacturer's own service network. Not a defect.AftermarketThird-party part. Affects originality, not authenticity.ModifiedGenuine parts in a configuration the factory did not sell. Affects originality and value, not authenticity.CounterfeitDeceptive reproduction intended to pass as genuine.UnknownEvidence on file does not settle the question.Aftermarket sapphire replacement
AftermarketProbableWhole production
Third-party sapphire crystals for the Moonwatch are widely sold and widely fitted. They affect originality and value, and are not evidence of a counterfeit watch.
Documented on these references
No reference fitments are documented for this part yet.
Provenance of this record
Sources & Evidence
OMEGA — Calibres and Master Chronometer certification
OMEGA SA
- Accessed
- 2026-08-18
Cited for
Last verified: Not yet reviewed