A rare and technically accomplished Edwardian stickpin in 18ct yellow gold and platinum, c.1915–1920, designed as a winning post — the open circular form associated with the finishing post of a horse race — and reversible, offering two entirely different faces. One side is set with finely cut calibré sapphires in a yellow gold setting; the reverse with old-cut diamonds set in platinum. The combination of yellow gold with sapphires on one face and the cooler platinum-and-diamond face on the other gives the wearer two distinct looks from a single piece — an ingenious and practical design that reflects the refined sporting culture of the Edwardian period. The use of both yellow gold and platinum in a single piece is characteristic of the transitional years of c.1910–1920, when platinum was becoming the preferred metal for diamond settings. French assay marks for 18ct gold; unknown maker's mark. Head diameter 1.13cm; pin length 7cm.

The Details

• Circa: 1915–1920
• Head diameter: 1.13cm
• Pin length: 7cm
• Hallmarks: French assay marks for 18ct gold; unknown maker's mark
• Obverse: Calibré-cut sapphires in 18ct yellow gold
• Reverse: Old-cut diamonds in platinum
• Origin: France