Vintage 14K Yellow Gold Art Deco Locket / Watch Case with Engine Turned Guilloché
Pendant/Watch Case · Yellow Gold (Alloyed with copper and silver), currently displaying significant surface oxidation/toning.
Purity: Targeting 14K (585 fine). Gold content is approximately 58.5%. Surface shows substantial tarnish or wear suggesting potential gold plating/filling rather than solid high-karat gold.

Type
Pendant/Watch Case
Purity
Targeting 14K (585 fine). Gold content is approximately 58.5%. Surface shows substantial tarnish or wear suggesting potential gold plating/filling rather than solid high-karat gold.
Gold Type
Yellow Gold (Alloyed with copper and silver), currently displaying significant surface oxidation/toning.
Weight
Estimated 8-15 grams as a semi-hollow or framed compartment piece.
Description
A classic circular Art Deco gold-toned case featuring a sophisticated engine-turned linear motif. This piece likely served as a specialized locket or a protective case for a small movement. The geometric precision of the parallel lines reflects the industrial optimism of the early 20th century.
Key Features
Mechanical winding crown integrated into the side, heavy vertical engine turning, and a substantial circular hinge-latch frame.
Color & Finish
Pale yellow gold with a high-polish rim and vertical engine-turned (guilloché) linear texture on the face. Shows heavy patina and surface graying.
Hallmarks & Stamps
None visible in the current view. Typically found on the interior rim or the bail attachment (internal inspection required).
Dimensions Estimate
Approximately 32-38mm in diameter; standard size for a mid-size pocket watch or oversized pendant locket.
Gemstones & Inlays
No gemstones visible. Features decorative mechanical engraving (engine turning).
Clasp & Closure
Hinged opening mechanism with a side-mounted thumb-piece or winding crown at the 9 o'clock position.
Chain & Links
N/A; singular circular frame with a standard smooth-beveled edge profile.
Craftsmanship Details
Precision engine turning executed by a rose engine lathe; frame is likely die-struck with a hand-fitted hinge and spring-tension closure.
Authentication Indicators
Red flags: The grayish-blue tint suggestion on the surface may indicate a base metal core or low-quality plating. Professional XRF testing is highly advised to confirm solid gold status.
Origin & Maker
Likely American or Swiss origin. Characteristics align with manufacturers like Elgin, Waltham, or jewelry houses like Krementz.
Era & Period
Art Deco (1920-1935). Identified by the geometric linear patterns and functionalist aesthetic.
Age Estimate
Circa 1925-1945 based on the crown style and the specific parallel-line engine turning pattern.
Cultural Significance
Represents the transition from ornate Victorian jewelry to the sleek, machine-age elegance required by the modern individual of the 20s and 30s.
Condition Notes
Fair to Good. Shows significant surface oxidation, micro-scratching, and potential wear-through on the high points of the engraving (brassing).
Value Estimate
Melt value ranges from $10-$300 depending on solid vs. plated status. Collectible premium for Art Deco styling adds $50-$100 if working/hallmarked.
Care & Maintenance
Clean only with a very soft microfiber cloth and mild soap. Avoid abrasives as they will strip the delicate engine-turned texture and any remaining gold layer.
Similar Items
10K Gold Filled Elgin Pocket Watches, Sterling Silver engine-turned snuff boxes, or 18K Cartier travel clocks.
Interesting Facts
Engine turning (Guilloché) was popularized in gold items by Peter Carl Fabergé, requiring a specialized lathe to cut precise patterns.