The A. Schild 1831 watch movement is a period-specific mechanism used from 1960-1962. It features a micro rotor and a detached manual wind system. The micrometer regulator enables precise timekeeping. The indirectly driven minute and second hands allow for a low-profile design. This movement is similar to the 215-97, but it offers an enhanced winding mechanism. Additionally, it includes automatic functionality and a sweep second hand.