Vintage Omega Automatic Geneve 18K Yellow Gold Tonneau Watch
Watch (Wristwatch, Dress style) · Yellow Gold (High-carat alloy with copper and silver)
Purity: 18K (750 fineness) Solid Gold; contains 75% pure gold
Type
Watch (Wristwatch, Dress style)
Purity
18K (750 fineness) Solid Gold; contains 75% pure gold
Gold Type
Yellow Gold (High-carat alloy with copper and silver)
Weight
35-45 grams (Total weight including movement and crystal)
Description
A classic 18K gold Omega automatic timepiece featuring a rare tonneau-shaped case. The silvered sunburst dial includes applied gold markers, a date window at 3 o'clock, and the iconic Omega logo. Its sleek, lug-integrated design represents the pinnacle of late-century Swiss dress watch elegance.
Key Features
Tonneau case shape, automatic movement, solid 18K gold composition, applied logo, sweep seconds hand
Color & Finish
Deep warm yellow; high-polished bezel with natural vintage patina and surface mikro-scratches
Hallmarks & Stamps
Stamped '750' and Helvetia head on inner caseback; Omega symbol and '18K' between lugs
Dimensions Estimate
32mm width (excluding crown) x 38mm lug-to-lug; 18mm lug width
Gemstones & Inlays
None; features applied gold baton hour markers and gold hands
Clasp & Closure
Not applicable (Head only); would typically use an 18K tang buckle
Chain & Links
Tonneau (barrel-shaped) case construction with integrated down-turned lugs
Craftsmanship Details
Precision-milled solid gold case; mechanical automatic caliber likely 565 or 1012; hand-applied indices and date frame
Authentication Indicators
Sharpness of applied logo, correct typography for 'Automatic', consistent gold luster vs. brassing, and proportional lug thickness
Origin & Maker
Swiss Made; Omega SA (Bienne, Switzerland)
Era & Period
Mid-Century Modern (Late 1960s to early 1970s stylistics)
Age Estimate
Circa 1968-1974 (based on Geneve series evolution and dial layout)
Cultural Significance
Represents the status of gold watches as standard retirement or milestone achievement gifts in the mid-20th century.
Condition Notes
Very Good; light surface oxidation and micro-marring on the bezel; dial shows minor spotting (patina); hands are original with slight aging
Value Estimate
$2,000 - $3,500 (Market value based on gold weight premium and brand collectibility)
Care & Maintenance
Avoid water exposure (vintage seals likely failed); professional movement service every 5 years; clean case with micro-fiber cloth only
Similar Items
Cartier Tortue, Patek Philippe Gondolo, or Omega Constellation (Square/C-shape)
Interesting Facts
The Geneve line was once Omega's most popular series, making up over 60 percent of their total production in the early 1970s.