Patek Philippe caliber CH 28-520

Patek Philippe caliber CH 28-520
Brand:Patek Philippe
Reference:CH 28-520
Movement:Automatic
Display:Analog
Diameter:30.00
Jewels:29
Reserve:55
Frequency:28800
Chronograph:Chronograph, Column wheel
Hands:Hours, Minutes

Description

Stripped down CH 28-520 chronograph functions with hours, minutes and seconds counter. Column wheel. Balance spring is Spiromax.

All watches using this caliber: