A vintage IWC Ingenieur Ref.666AD from the 1960s. This model features the legendary Cal.8531 Pellaton automatic movement and the iconic anti-magnetic soft-iron inner case.

【Details】
• Movement: Cal.8531 Pellaton Automatic.
• Case Size: 36.5mm (excluding crown).
• Crown: Original plain crown (Not a "fish" crown).
• Condition: Fully overhauled in March 2025. It is in excellent working order and keeps accurate time.
• Dial: Original silver dial with applied markers and script "Ingenieur" logo. Shows natural vintage patina.
• Crystal: Clean and clear.
• Strap: Brand new aftermarket leather strap.

【Note】
The watch is sold in its authentic vintage condition. Due to its age, water resistance is not guaranteed.