Vintage 18K Yellow Gold Tonneau Lady's Cocktail Watch

Watch (Cocktail, Dress) · Yellow Gold (rich warm traditional tone)

Purity: 18K (750/1000 fineness), approximately 75% pure gold content with silver/copper alloys

Vintage 18K Yellow Gold Tonneau Lady's Cocktail Watch

Type

Watch (Cocktail, Dress)

Purity

18K (750/1000 fineness), approximately 75% pure gold content with silver/copper alloys

Gold Type

Yellow Gold (rich warm traditional tone)

Weight

Case weight approximately 8-12 grams (excluding movement and strap)

Description

A refined mid-century lady's cocktail watch featuring a 18K solid gold tonneau-shaped case. Elegant and minimalist, this timepiece represents the transition from Art Deco geometric forms to the softer curves of 1950s luxury jewelry.

Key Features

Tonneau (barrel) shaped case, fixed horizontal bar lugs, knurled manual-wind crown, and stamped serial numbering

Color & Finish

Polished yellow gold with natural surface patina and fine scratches consistent with age

Hallmarks & Stamps

Serial number '152474' visible at bottom case edge; eagle head or Helvetia hallmark indicated by faint indentation center-left

Dimensions Estimate

Case dimensions roughly 15mm x 22mm; fits under 'petite' or 'cocktail' size category

Gemstones & Inlays

None visible on the case back; likely contains synthetic rubies within the movement mechanism internally

Clasp & Closure

Attached to a double-cord black strap with sliding gold-toned adjustable slider/stay and unidentified end closure

Chain & Links

Non-metal band; features a dual textile or leather cord construction through fixed gold lugs

Craftsmanship Details

Friction-fit case back; high-precision milling of solid gold ingot; hand-finished edges around the crown recess

Authentication Indicators

Sharpness of serial number engraving, deep color hue characteristic of 18K high-gold content, and precise fitting of the case back

Origin & Maker

Likely Swiss or French origin; style is characteristic of Omega, Longines, or Tissot from the post-war era

Era & Period

Mid-Century Modern (circa 1940s-1950s) based on the tonneau shape and cord band style

Age Estimate

Circa 1945-1955 based on case serial depth and lug geometry

Cultural Significance

A symbol of feminine sophistication in the mid-20th century, where watches were sold as functional jewelry for formal evening wear

Condition Notes

Good vintage condition; visible surface marring and 'micro-scratches' on the high-polish case back; movement functionality unverified

Value Estimate

Resale value $400-$850 USD based on gold melt weight plus vintage brand premium and movement condition

Care & Maintenance

Avoid moisture and magnetic fields; use a dry microfiber cloth; periodic professional servicing of mechanical movement required

Similar Items

Bulova 14K cocktail watches (typically thinner gold), vintage Cartier Tank (different lug style), or 1950s Hamilton cord watches

Interesting Facts

The serial number 152474 allows for potential archival lookup if the manufacturer brand is identified inside the case

Identified on 6/3/2026