Wyler Oversized Gilt Dial Clamshell Chronograph
A top example of the clamshell waterproof chronograph.
Case: Stainless steel, clamshell waterproof, oversized pump pushers
Dial: Glossy gilt, outer tachymeter and telemeter scales
Hands: Gold leaf
Movement: Manually wound Valjoux 22
Size: 38 mm