MikiJ
路Even Patek Philippe and other "top" houses were using F. Piguet and Jaeger-LeCoultre movements in this era! Although I think few would argue the quality of these movements in the hands of PP/AP/V&C.
Sad but True..Even some of there in-house movements were sub-par! I wore a Patek Nautilus #3800 as my daily beater for a couple of decades. It was powered by one of Patek's worst movements in-house movements, cal.335. It was one of their few movements that did not have the Geneva Seal. Needless to say I got to know the Pat Cancilla at Henri Stern Watch Agency New York ;-(
Sad but True..Even some of there in-house movements were sub-par! I wore a Patek Nautilus #3800 as my daily beater for a couple of decades. It was powered by one of Patek's worst movements in-house movements, cal.335. It was one of their few movements that did not have the Geneva Seal. Needless to say I got to know the Pat Cancilla at Henri Stern Watch Agency New York ;-(