Debuting in 1967, the Ultra-Chron was built to celebrate Longines’ centenary.  The watch came in so many different shapes and models but the Ultra Chron Insigna always gave away the quality of these In House work horse movements. The watch is all original with a new Diametris Strap and recently serviced.


*** The pictures may show the reflection of the camera lens, black spots mostly ***




Make: Longines

Model: Ultra-Chron

Reference: 2924-431

Year: Around 1970

Material: Steel / Gold Bezel

Dimensions: 35mm

Crystal: Plexiglass

Movement: Automatic 431

Bracelet/Strap: Leather / Suede Black Diametris

Lug Width: 18mm

Box/Papers: No/No

Longines Ultra-Chron 2924 Cal 431 C Shape Case 14k Bezel


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    • All our prices are displayed in USD
    • Each individual piece comes with a 5-day inspection period.
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    • We will generally ship all of our products via Federal Express Priority within 5 Business Days of payment clearing