Vintage Omega Seamster DeVille 14k Gold GF Automatic Mens Watch 1975
Model: Omega Seamaster De Ville
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Year: 1975
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Case size: 42mm (very large for a vintage De Ville; likely a “C-case” or modern-style dress/Seamaster hybrid)
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Case material: 14K gold-filled (not solid 18K)
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Movement: Automatic (likely a cal. 1020 or 1030 series, common mid-70s Omega automatics)
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Reference: KM6326
This watch straddles vintage dress and modern oversized style for the time. 1970s Omegas were experimenting with bolder cases and integrated bracelets, especially in the Seamaster and De Ville lines.
Movement
Most 1970s Seamaster De Ville automatics in 14K GF cases use Omega in-house calibers:
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Cal. 1020/1030: 28,800 bph, automatic, date complication
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Reliable, robust movements
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Servicing is straightforward today
If you can open the caseback, the movement serial number will precisely date it and confirm caliber.









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