το θυμαμαι απο γνωστου,αλλα το εψαξα
Most Speedmaster Reduced models used modular movements (Cal. 1140, 1143, and 3220), pairing an ETA base with a chronograph module by Dubois-Depraz. These have "uneven" pushers and crown and subdials at 3, 6, and 9 and have various reference numbers, notably 3510. However, the 39 mm Speedmaster Automatic, introduced in 1991, uses the integrated Valjoux 7750-based Cal. 1155 movement, giving it a distinctly different look with subdials at 12, 6, and 9.
