Tank Allongée — Eight Days

Built around a rectangular twin-barrelBarrelThe drum that contains the mainspring. European Watch & Clock Co. movementMovementThe working mechanism inside a watch or clock. (LeCoultre 124 ébaucheÉbaucheAn incomplete movement supplied for further work before it becomes a finished watch mechanism. The parts included in an ébauche have varied by period and supplier; the term does not by itself specify a complete, assembled movement.) that runs eight days. Unlike the standard Tank and Cintrée, the case is straight with sharply down-turned angular lugs. Fewer than ten Cartier eight-day wristwatches from the 1930s–40s are known, in yellow, pink and white gold and platinum; the high cost of the movementThe working mechanism inside a watch or clock. kept numbers small.