Girard Perregaux- Opera Two

The Girard Perregaux Opera Two is a minute repeater with Westminster Chime, tourbillon, perpetual calendar wristwatch in oversized, massive solid platinum case. The dial features cutaways which highlight the tourbillon and repeating apparatus. The Girard Perregaux "Opera" series watches are the highest of high grade watches, from Switzerland's oldest continuously operating watch manufacturer.
The dial is silver with dauphine hands. This watch is a perpetual calendar, and the uppermost subdial displays month and leap year cycle. Date is displayed in the 3 o'clock subdial. Day is displayed in the 9 o'clock subdial. Tourbillon is visible working in the 6 o'clock dial cut away.

Movement is the extremely elite manual winding Girard Perregaux Caliber GP 9897 with 37 jewels, beating at 21,600 vibrations per hour and with 75 hour power reserve. The real story with this caliber is, of course, the complications: Westminster Chime Minutes Repetition, Tourbillon and Perpetual Calendar.
Technical Data:

Material : Pink gold Dimensions / Diameter : 42.00 mm Height : 14.54 mm Case-back : Sapphire crystal, secured by 6 screws Water resistance : 3 ATM (100 feet) Movement : GPME0980, manual Calibre : 12 1/2 ''' Frequency : 21,600 Vib/h (3 Hz) Jewels : 37 Power reserve : min. 75 hours Functions : Tourbillon, hour, minute, minute repeater on four gongs (hours, quarters and minutes - Westminster chime), perpetual calendar, small second on the Tourbillon