Vacheron Constantin caliber 1731QP
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| Brand: | Vacheron Constantin | 
|---|---|
| Reference: | 1731QP | 
| Movement: | Handwound | 
| Display: | Analog | 
| Diameter: | 32.80 | 
| Jewels: | 36 | 
| Reserve: | 65 | 
| Frequency: | 21600 | 
| Date: | Date, Day, Leap Year, Month, Perpetual Calendar | 
| Hands: | Hours, Minutes | 
| Astronomical: | Moonphase | 
| Acoustic: | Minute Repeater | 
                        1731QP description
Hand-wound movement developed and manufactured by Vacheron Constantin, combining minute repeater and perpetual calendar functions measuring just 5.70 mm thick.

