The Grand Lange 1 reference 115.031, manufactured from 2003 to 2008, utilizes a pink gold case complemented by a black dial and grey subdials.
Movement Type
Manual
Caliber
L901.2Jewels
53
Reserve
72
Frequency
21600
Hands
Small Seconds
Shape
Round
Material
Pink Gold
Glass
Sapphire
Thickness
8.80 mm
Diameter
40.90 mm
Dial Color
Black