The Patek Philippe Perpetual Calendar Chronograph reference 3970ER-012 is presented with a rose gold case and a silver-colored dial. This image is provided by Sotheby's.
Movement Type
Manual Chronograph
Caliber
CH 27-70 QJewels
24
Reserve
60
Frequency
18000
Hands
Small Seconds
Shape
Round
Material
Red Gold
Glass
Sapphire
Diameter
36.00 mm
Dial Color
Silver
