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 ***
 
Details:
 
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