The later models of Heuer's up / down chronographs are powered by the Valjoux 77 movement (13 ligne), and have the "Heuer" shield within the top recorder. Measurement across the dial is 35 millimeters.
The later models of Heuer's up / down chronographs are powered by the Valjoux 77 movement (13 ligne), and have the "Heuer" shield within the top recorder. Measurement across the dial is 35 millimeters.