Ronda 1215

The Ronda 1215 is a manual wind movement originally manufactured by Aegler between 1929 and 1937. It features a Breguet hairspring, indirectly driven minute hand, and a small seconds complication at six o'clock. The movement contains 21 jewels and lacks shock protection. It is mechanically identical to the Gruen 879 and Rolex 170 movements. Production was discontinued after approximately eight years.