Omega De Ville Prestige Co-Axial 39.5mm 424.13.40.20.02.001 | Grail Atlas
Omega
De Ville Prestige Co-Axial 39.5mm
Ref. 424.13.40.20.02.001
2014–present · 39.5mm · caliber Omega Cal. 2500C -- Co-Axial automatic, 25,200bph, 48h PR, 27j; anti-magnetic to 15,000 gauss; used in the mid-size De Ville Prestige
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In-house manufacture caliber · caliber Omega Cal. 2500C -- Co-Axial automatic, 25,200bph, 48h PR, 27j; anti-magnetic to 15,000 gauss; used in the mid-size De Ville Prestige
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
39.5 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.
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The Co-Axial three-arm lever fork in Cal. 2500C is the primary authentication point; feel the star caseback relief with a fingernail to confirm genuine engraving versus a stamped fake.
Known issues in the market
Standard ETA-based movement swaps are the primary fraud vector; the Co-Axial fork in Cal. 2500C is architecturally distinct and visible through the caseback.
The Constellation star caseback engraving must have tactile relief; flat stamped stars indicate a non-genuine or replaced caseback.
Production ran approximately 2008 to 2020; examples with reference numbers outside this range may be a different generation.
Area
What to check
What is correct
Red flag
movement
Co-Axial escapement fork
Cal. 2500C with three-arm Co-Axial lever fork visible through caseback, distinct from standard ETA lever
Standard two-arm ETA lever without Co-Axial fork; any caliber designation other than 2500 or 2500C
caseback
Star caseback engraving relief
Deeply engraved star with relief felt under fingernail, sharp star-point edges
Flat stamped star with no tactile relief; rounded star points indicating a cast or stamped caseback
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Applied indices with uniform height, lacquered sunray base with even sheen
Printed indices, lacquer with bubbling or delamination, any index with different height from its neighbors
Common legitimate replacements
Dials on older De Ville Prestige models occasionally show lacquer aging; confirm no re-lacquering by checking for uniform sheen under a loupe.
Bracelets and straps are frequently replaced on pre-owned examples; original Omega-signed deployant confirms bracelet provenance.
Expert resources: Omega.com De Ville Prestige archive documentation for the 2008 to 2020 generation. Omega Forums for Cal. 2500C vs. ETA escapement identification.
