Black Shield 17-Jewel Ladies' Cocktail Watch
Horological decorative art; ladies' wristwatch with an integrated expandable metallic band • Black Shield (a brand often associated with jeweler-distributed movements, typically Swiss or American assembly)

Style & Movement
Mid-Century Cocktail/Art Deco Revival style, featuring feminine proportions and decorative jewelry elements
Medium & Technique
Mechanical hand-wound movement (17 jewels); white metal case (likely silver-toned base metal or stainless steel) with marcasite stone accents set in ornate openwork lugs
Creation Period
Circa 1940s-1950s (Mid-20th Century)
Dimensions & Format
Approximately 15mm-18mm case diameter (petite cocktail format) on a standard expander bracelet
Subject Description
Small tonneau-shaped watch face with Arabic numerals at 12, 3, 6, and 9 and dot markers; central black hands. The watch is integrated into decorative lugs featuring a floral or scrollwork design set with faceted marcasites.
Condition & Value Assessment
Condition Assessment
Fair to Good; reflecting its age with visible surfaces wear, patina/tarnish on the metal, and yellowing of the acrylic crystal
Estimated Market Value
$30 - $75 USD (depending on movement functionality and metal purity)
Auction Estimate
$20 - $50 USD
Provenance History
Likely a private domestic acquisition; common as gifts or heirlooms during the mid-20th century. No specific ownership stamps visible on front.
Art Historical Significance
Represents the post-war transition of wristwatches from functional tools to decorative 'jewelry-first' accessories for women. '17 Jewels' indicates a quality standard of the era intended for longevity.
Notable Features
Decorative openwork lugs set with marcasite; '17 Jewels' movement designation; distinct mid-century branding 'Black Shield' which caters to the collector of vintage boutique watch brands.
Condition Issues
Surface oxidation and tarnish on the metal case; scratches and significant yellowing of the crystal face; potential mechanical seizing due to dried oils; wear on the expander link tension.
Conservation Recommendations
Professional ultrasonic cleaning of the case; replacement of the acrylic crystal; movement servicing (COA: Clean, Oil, Adjust) by a horologist; storage in a low-humidity environment to prevent further oxidation.