Calculator 110.633 – Original bracelet

A bold and ingenious design from Heuer’s golden era, the Calculator 110.633 integrates a slide rule bezel with the automatic Caliber 12 chronograph—making it one of the most unique tool watches of the 1970s.

Details:

• Reference: 110.633

• Year: Circa 1977

• Case Size: 45mm, stainless steel

• Bezel: Bi-directional slide rule calculator bezel

• Dial: Deep blue with contrasting orange hands and accents, date at 6 o’clock

• Movement: Heuer Caliber 12, automatic chronograph with date

• Bracelet: Integrated stainless steel bracelet with Heuer-signed clasp

Set Includes:

• Watch only

• Original Heuer-signed bracelet and clasp

Condition:

• Case in good vintage condition with visible wear and surface marks. Please note serial & ref no not visible due to fading from age (very common on vintage Heuers)

• Bezel functions properly, minor signs of age

• Dial in excellent condition with vibrant color and clean subdials

• Original hands with nice color contrast

• Running well; chronograph functions properly and resets to zero

The Heuer Calculator 110.633 is a standout among vintage chronographs, blending aviation and motorsport influence with a complex yet functional design that remains iconic to this day.