1958 IWC Calatrava Cal.853 18K Automatic italian 4520A Hand Wind Hi-Beat MovementCase

4520A Hand Wind Hi-Beat MovementCase Width: 36

Chronograph functions working properly and resets to 12

672/ETA 1256 Automatic Movement Case Width: 34

Glossy Black Painted Hour

1958 IWC Calatrava Cal.853 18K Automatic italian 4520A Hand Wind Hi-Beat MovementCase1958 IWC Calatrava Cal. 853 18K Automatic SpecsCaliber: Cal. 853 Automatic Movement Case Width: 35mmLug Width: 18mmThickness: 10. 4mmLug to Lug: 41. 5mmDetails18K Solid Yellow Gold CaseWhite DialGold Dauphine Minute & Hour Hands With LumePrinted LogoApplied Gold Raised Hour Markers With Lume Dots Gold Dots Around Minute Track18K Signed Snap Case BackOriginal Signed CrownClean Acrylic Crystal Hallmark On Case Between Bottom Lugs, Under Top Right Lug