Approx. Ø53mm, approx. 135g, heavy 18K gold case à-goutte, case with both manufacturer numbers Louis Audemars 11266 with Louis Autemars case punch, as well as Le Roy Paris Horloger de la Marne No. 49464 on the dust cover, high-fine anchor chronometer movement with chronograph rest, wolf gearing and golden wheels, former Louis Aumemars crown hoist, eternal calendar with consideration of the 29th century February, lunar phase and moon age, thus 6 complications, well preserved enamel dial, gold pointer, functional, handle with traces of wear, otherwise very well preserved, rare.