Vintage 18K Yellow Gold Cocktail Watch with Textured Expansion Bracelet
Watch (Cocktail/Jewelry Watch) · Yellow Gold, characterized by a deep, rich buttery hue suggesting high-karat content common in mid-century European watchmaking.
Purity: 18K (750 fineness), approximately 75% pure gold content. Note: Expansion bands of this era often feature gold caps over stainless steel or brass internal springs.

Type
Watch (Cocktail/Jewelry Watch)
Purity
18K (750 fineness), approximately 75% pure gold content. Note: Expansion bands of this era often feature gold caps over stainless steel or brass internal springs.
Gold Type
Yellow Gold, characterized by a deep, rich buttery hue suggesting high-karat content common in mid-century European watchmaking.
Weight
Total weight approx 25-35 grams; gold melt weight is significantly less due to watch movement and internal steel springs in the band (approx 10-15g of 18K gold).
Description
A classic example of mid-century feminine luxury, this 18K yellow gold cocktail watch doubles as a piece of fine jewelry. The petite circular case features a mechanical movement, while the expansion bracelet is meticulously textured to catch light from all angles, offering a seamless 'bangle' look on the wrist.
Key Features
Mechanical hand-wound movement; diamond-pattern texture links; seamless expansion design; high-purity 18K gold construction common to high-end European watch houses.
Color & Finish
Classic rich yellow gold with a high-polish case back and a diamond-cut/engine-turned textured finish on the outer links for a shimmering effect.
Hallmarks & Stamps
Usually found on the inside of the case back or the small end-links of the bracelet; expected marks include '750' or a female head (Helvetia for Swiss) and likely a maker's cartouche.
Dimensions Estimate
Case diameter approx 15-18mm (petite), bracelet width approx 8-10mm, length is expandable but generally fits a 6 to 7-inch wrist.
Gemstones & Inlays
No visible gemstones on the case back; however, cocktail watches of this era often featured a dial with small diamond or gold indices.
Clasp & Closure
Expansion style (stretches over the hand), removing the need for a traditional clasp; common for mid-century ladies' 'jewelry watches'.
Chain & Links
Structured expansion links; outer caps are patterned gold, inner links are smooth. These are held together by internal leaf or coil springs.
Craftsmanship Details
Precision-stamped link caps with hand-finished assembly of the internal spring mechanism. The case back is friction-fit or snap-on, showing tight tolerances expected of Swiss-era manufacturing.
Authentication Indicators
Deep, consistent color of 18K gold; precise soldering on the lugs; high-quality engine turning on the links. Red flag: Check for base metal 'brassing' on high-friction areas which would indicate plating.
Origin & Maker
Likely Swiss or French origin given the style; brands such as Omega, Longines, or Tissot frequently produced this exact silhouette during the 1950s.
Era & Period
Mid-Century Modern / Retro (circa 1950-1965), characterized by the transition from ornate Art Deco to sleek, engine-turned geometric textures.
Age Estimate
Circa 1955-1960, based on the small 'hidden' case design and the geometric texture of the expansion bracelet.
Cultural Significance
Represented the post-war boom in luxury goods where functional items like watches were redesigned to be worn as formal evening jewelry for women.
Condition Notes
Very Good/Good. The case back shows light 'desk diving' scratches. The bracelet tension appears intact, though gaps between links suggest some usage wear. Hallmarks are likely partially worn.
Value Estimate
Market value approx $800 - $1,400 depending on the brand of movement and current gold spot price; value is split between gold weight and vintage appeal.
Care & Maintenance
Avoid immersion in water (not water-resistant); clean with a dry soft cloth; professional movement service every 5 years; avoid over-stretching the links to maintain spring tension.
Similar Items
14K Gold Filled Ladies Watch (heavier brassing, lower value), 18K Gold Bangle Watch (rigid, non-expansion), or a 1940s Rose Gold Ruby Cocktail Watch.
Interesting Facts
Expansion bracelets were popularized in the mid-20th century as a marvel of comfort and engineering, often referred to as 'Spiros' or 'Twist-O-Flex' styles in the consumer market.