This watch is also known as:
3757BA/12/9V6 , 3757BA/1E9/V6 , 3757ba_1e_9v6 .
Classique ? Grande Complication ? wristwatch in yellow gold, with tourbillon. Hand-wound movement, engraved by hand. Perpetual calendar showing the day, date, month and leap years. Small seconds on the tourbillon shaft. Compensating balance-spring with Breguet overcoil. Silvered gold dial, hand-engraved on a rose-engine. Sapphire caseback. Available in two languages. Water-resistant.