Gold-Plated/Solid Gold Swiss Automatic Wristwatch with Two-Tone Expansion Band
Watch (Wristwatch) · Two-Tone (Yellow Gold and Stainless Steel/White Base Metal)
Purity: Indicated as possible 18K (750) or 14K (585) on case back lugs; however, visible 'brassing' on the expansion band suggests gold-plating or gold-filled components for the bracelet.
Type
Watch (Wristwatch)
Purity
Indicated as possible 18K (750) or 14K (585) on case back lugs; however, visible 'brassing' on the expansion band suggests gold-plating or gold-filled components for the bracelet.
Gold Type
Two-Tone (Yellow Gold and Stainless Steel/White Base Metal)
Weight
Estimated total weight 70-100 grams; actual gold weight is likely low due to movement and steel components.
Description
A classic Swiss-made automatic wristwatch featuring a distinctive two-toned scalloped expansion bracelet. The piece merges utility with mid-century luxury aesthetics, featuring a robust screw-back case designed for durability and a movement that winds through the natural motion of the wearer.
Key Features
Angular lug design, 'Automatic' movement designation, scalloped link texture, and Swiss '433' reference marking.
Color & Finish
High-polish yellow gold tone contrasted with brushed or polished silver-toned stainless steel. Visible surface wear showing a duller base metal beneath the gold layer on the bracelet links.
Hallmarks & Stamps
Stunning 'SWISS' mark on the lug; numerical stamp '433' or similar serial/reference number on the lower lug; 'Automatic' text visible on the screw-down case back.
Dimensions Estimate
Case diameter approximately 34mm-36mm (Standard Vintage Size); Bracelet width approximately 18mm tapering slightly.
Gemstones & Inlays
None visible in current view; appears to be a metal-focused luxury design.
Clasp & Closure
Expansion/Telescopic style band (no mechanical clasp), designed to stretch over the hand and retract for a snug fit on the wrist.
Chain & Links
Scalloped horizontal links with a 'Bonklip' or 'Speidel' style expansion movement; two-tone alternating or capped construction.
Craftsmanship Details
Machine-turned scalloped links, precision Swiss stamping on lugs, and a threaded screw-down case back for dust protection.
Authentication Indicators
Sharp 'SWISS' stamping and serial numbers; evidence of base metal showing through gold indicates the band is not solid gold; case may be solid gold or heavy gold electroplate (HGE).
Origin & Maker
Switzerland (Swiss Made); specific brand obscured but high-quality automatic movement indicated.
Era & Period
Mid-Century Modern to Retro (circa 1950s - 1970s); characterized by the ribbed expansion band and smaller case proportions.
Age Estimate
Circa 1965-1975 based on the case back font, lug shape, and the popularity of expansion bands during this period.
Cultural Significance
Represents the post-WWII boom in Swiss horology where automatic (self-winding) watches became a standard for the professional class.
Condition Notes
Fair to Good. Significant plating wear (brassing) on the gold-toned links of the expansion band; surface scratches on the case back; movement functionality unknown.
Value Estimate
Primarily horological/collectible value rather than melt value; estimated $150-$450 depending on brand and movement condition.
Care & Maintenance
Avoid immersion in water as vintage seals may be degraded. Clean with a soft, dry cloth. Professional movement servicing recommended every 5 years.
Similar Items
Omega Constellation with integrated bracelets, vintage Longines Admiral, or Bulova Super-Seville.
Interesting Facts
Expansion bands were considered a marvel of engineering in the mid-20th century, allowing for 'perfect fit' without the need for link removal tools.