On May 11, 1925 the watchmakers began working on 198.012 movement for  Patek Philippe Complications replica watches which was comparable to the Lepine from Victorin Piguet. Its unusual feature was that all the elements for operation were on te case’s left side such as the little slide. It was sold on January 4, 1927.

A third model 198.018 was shipped on January 31, 1927 to Tiffany and Co. In the same year, there was another rattrapante chrono (198.076 movement) which first had a cushion shaped gold cse but in 1935 it switched to a round case because no one bought it. It finally left Patek Philippe a year later and there were perhaps no more than 12 of these early split seconds chronos.