OMEGA | SPEEDMASTER REF 2915-3, A STAINLESS STEEL CHRONOGRAPH WRISTWATCH, MADE IN 1959

The third iteration of the first Speedmaster reference, the 2915, introduced several changes to the aesthetics of the watch. After the essentially identical references 2915-1 and -2, the -3 featured more frequent use of the black aluminum bezel, alongside the Alpha hands as opposed to the Broad Arrow hands on the -1 and -2. The hour hand, in particular, for the 2915-3 was longer and had a larger luminous surface in the shape of a triangle, a layout that is seen on and off throughout the later reference 2998, which could feature small straight lines of luminous material on the hour hand as well. On the case back, the Speedmaster text relocated from the edge of the case back closer to the hippocampus.