Nivada Grenchen / Croton Chronomaster Aviator Sea Diver Chronograph - circa 1960
 
Serial: n/a
 
Case Width:  38.0mm

Case Thickness: 13.7mm including the crystal

Dial: Original
 
Hands: Original Broad Arrow 
 
Bezel: Bi-Direction Friction Bezel with Aluminum Original Insert
 
Movement: Valjoux manual-winding Caliber 23
 
Crystal Material: Plexi Domed

Lug Width: 20mm

Band Material: Stainless Steel

Condition: Running within +/-20 Seconds a Day, Chronograph doesn't reset to zero but working well
 
Extras: Watch Only