Patek Philippe caliber 31-260 REG QA

Patek Philippe caliber 31-260 REG QA
Brand:Patek Philippe
Reference:31-260 REG QA
Movement:Handwound
Display:Analog
Diameter:32.00
Jewels:31
Reserve:48
Frequency:23040
Date:Annual Calendar, Date, Day, Month
Hands:Hours, Minutes, Small Seconds, Day / Night Indication

Description

Somewhat surprisingly, caliber 31-260 REG QA combines a regulator-style lay-out with an annual calendar and a microrotor winding system. The Gyromax balance, Spiromax balance spring and Pulsomax escapement beat at an unusual frequency of 23040 bph.

All watches using this caliber: