



Rare 1930's Cartier 9K Gold Boxing Medal Brooches – Amateur Boxing Association
A Rare Pair of 9K Gold Medals Honoring R.A. Cosgrove’s 1935–1936 Boxing Triumphs
A remarkable pair of 9K gold boxing medals, retailed by Cartier in 1936, commemorating victories in the Amateur Boxing Association’s Schoolboys Championships. These exceptional medals were awarded to R.A. Cosgrove, the 1935 Intermediate and 1936 Senior Champion — an extraordinary back-to-back achievement in British amateur boxing.
Each medal is richly engraved on one side with the figure of a boxer or two opponents in the ring, surrounded by laurel wreaths and the inscription “Amateur Boxing Association.” The reverse sides are finely inscribed with the competition details:
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1935 Intermediate, 7 st. 7 lbs – Winner R.A. Cosgrove
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1936 Senior, 8 st. 7 lbs – Winner R.A. Cosgrove
Crafted in solid 9K gold and joined by a delicate gold chain, the medals bear clear Cartier retailer marks and British hallmarks, confirming their authenticity and quality. Their conversion into brooches — complete with period fittings — transforms these historic awards into elegant wearable trophies, preserving both their sporting and artisanal significance.
During the 1930s, Cartier London frequently collaborated with prestigious sporting associations, supplying presentation pieces and custom commissions for elite events. These brooches exemplify Cartier’s rare intersection of luxury design and athletic heritage, embodying both strength and refinement.
This pair stands as a tangible link to the golden era of British boxing — a time when discipline, artistry, and excellence converged. A true collector’s piece, it represents a unique fusion of sports history, craftsmanship, and Cartier’s enduring legacy.
Details:
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Date: 1935–1936
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Material: 9K Gold
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Maker: Retailed by Cartier
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Origin: United Kingdom
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Engravings: “Schoolboys Championships,” “Amateur Boxing Association,” “R.A. Cosgrove”
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Type: Twin medal brooches joined by a gold chain
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Weight: [add when known]
Provenance:
Awarded to R.A. Cosgrove, winner of the Amateur Boxing Association’s Schoolboys Championships, 1935–1936. Retailed by Cartier, London.
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Why does antique gold look different, and is surface wear normal?
Antique pieces were often made in gold standards less common today, such as 15ct (used in Britain only between 1854 and 1932), 9ct, or higher-karat continental gold, which give a warmer tone than typical modern 14k. Light surface wear, softened edges, and a gentle patina are normal and expected on antique jewelry — they reflect the age and authenticity of the piece, not flaws. We describe the true condition of every item honestly in its listing.
What do the hallmarks and maker's marks mean?
Hallmarks are small stamped marks that identify the metal standard, and often the maker, assay office, and date. They are one of the best tools for authenticating antique jewelry. We identify and explain the marks we find on each piece in its description, and we're happy to send close-up photographs of any hallmark on request so you can see exactly what you're buying.
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Clean gently with a soft cloth, avoid harsh chemicals, ultrasonic cleaners, and chlorine, and store pieces separately so they don't scratch one another. Remove rings and bracelets for heavy manual tasks. Antique gold is softer than modern alloys, so period pieces are best enjoyed with normal care. Treated well, fine antique jewelry lasts for generations — many of our pieces are already a century or more old and still beautiful.
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