IWC Cal. 89 1951

In the 1950s, the International Watch Company of Schaffhausen resumed the production of civilian watches after the war years. At the heart of this rebirth, the caliber 89 established itself as one of the house's most remarkable movements: a hand-wound manufacture movement, it combined robustness, precision, and unfailing reliability, true to IWC's tradition of excellence. Introduced in 1946 and remaining in production for over thirty years until 1979, this legendary caliber powers an elegant dress watch with a sober and timeless appeal. The engraving on the back reveals its history: gifted by Gebrüder Sulzer AG of Winterthur to one of its long-serving employees, it testifies to the Swiss tradition of rewarding loyalty and commitment with a durable, quality object.

Wrist size in photo/video: 17 cm

Case

• Steel
• Diameter: 31 mm without crown
• Light wear consistent with age
• Knurled crown signed with IWC fish logo
• Engraved Sulzer dedication on case back

Movement

• Caliber 89, manual winding
  
• This caliber is derived from Cal.83, the famous movement that powered many military watches during World War II.

Dial

• Beautiful patina, more pronounced on the edges of the dial
• Large printed Arabic numerals, printed baton minute markers
• Patinated lume hour/minute hands; very elegant blued steel central seconds hand
• Signature International Watch Co. Schaffhausen.

Watch serviced in May 2026