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Horological Meandering

Longines calibers

 

yes, Longines has a long and deep history (like JLC) of in-house movements, own chronograph movemsnts (as few only- most bought in by Valjoux, Venus and/or bought directly the movement maker like Omega - Lemania or Zenith - Martel etc.) and many other own innovative movements (even Quartz: Longines tried their own first, with the Ultra-Quartz). And Nico, you are right: probably already under economic pressure Longines used Valjoux movements in chronographs starting at the end of the 60s. They were probably cheaper than to use and produce in-house 30 CHs. So, there is the first phase of Valjoux in chronographs and then the big shift to ETA in 70s.

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