Lot 246. Platinum, 18 Karat White Gold, Aquamarine, Sapphire and Diamond Bracelet, Mauboussin, Paris, circa 1940. Estimate 30,000 — 50,000 USD. Photo: Sotheby's. 

Centering an emerald-cut aquamarine weighing approximately 45.00 carats, within a scrolling panel set with round and baguette diamonds weighing approximately 8.70 carats, completed by cone-shaped links set with round sapphires, length 6 inches, signed Mauboussin, Paris, with French assay mark and French maker's mark for Verger Fils; circa 1940. 

Note: The design of the present bracelet is believed to have been inspired by the Maginot Line, a system of defensive fortresses constructed in northeast France to divide French and German-occupied territories during WWII. The fortresses were characterized by their linear design and thick concrete walls, many of which were built underground, giving them a mound-like appearance. Outside the main structures, a series of “dragon’s teeth,” similar in shape to the bracelet’s sapphire-set links, were arranged to impede the procession of German tanks.

A bracelet with links of similar design is in a photograph of Mauboussin's vitrine at the World's Fair in New York in 1939. This photograph can be seen on page 118 of Mauboussin by Marguerite de Cerval.

Sotheby's. Magnificent Jewels Including the Legendary Stotesbury Emerald, New York, 25 Apr 2017, 10:00 AM