The A. Schild 1637 watch movement is a variant of the Record design, which was acquired by Longines. It is uncertain if there were other variations available under Wittnauer calibres. This movement line includes manual-wind versions and an automatic version without date, which have only been observed from Wittnauer, rather than Record or Longines. The specific differences between the C11KS-1 and C11KS/1 are not known. The functions of the movement include manual winding, a sweep second hand, and a date feature that can be quickset by repeated pushing of the crown. The C11KS-1 movement was utilized around the 1960 period.