patrick_y[PuristSPro Moderator]
33549
Actually most rattrapantes are integrated...
Some less expensive rattrapantes are modules. For instance IWC's rattrapante on their Top Gun Doppel-chrono is a modular one. But if you look at higher end rattrapantes, their movements were built from the ground up to be a rattrapante. You can even see the scissor clamp at the back of the movement which is usually an indication that it's likely integrated.
Most rattrapante are modules
By: MrkK : October 9th, 2021-23:25
I am not sure about Valjoux 55, to but all Venus rattrapante are modules. Breguets and Patek 5004 are Lemania based. Lange regular rattrapante is a module I believe, not sure about double and triple split. I assume they are still based on Lange chronograp...