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This is wonderful and very interesting research!
I have only been able to skim your article so far, but I find the story of this Beta 4 caliber developed at the request of Piaget and renamed 7P quite fascinating.
I will read your article fully a little later.
Thank you for sharing.
Best, Emmanuel
Piaget 7P = CEH Beta 4 (original research)
I would like to share original research that points quite strongly to the Piaget cal. 7P, usually described uncritically as Piaget’s “first in house quartz movement”, being a Centre Eletronique Horloger invention internally called the Beta 4. I draw on a ...
This is wonderful and very interesting research!
I have only been able to skim your article so far, but I find the story of this Beta 4 caliber developed at the request of Piaget and renamed 7P quite fascinating. I will read your article fully a little later. Thank you for sharing. Best, Emmanuel
Be sure to refresh
I cleaned up or noted some typographical errors, including one within a cited source 😅 And if I am shown to be wrong on the Beta 4 - 7P connection, things get even more interesting because then there is a completely unknown Piaget quartz caliber lurking a...
New corroborative information
Collector @ArkJasdain shared photos of the Piaget regulation box to me, see at bottom. He also said on Reddit: QUOTE Yes, the original iterations of the 7P movement did indeed have the capability to have the rate reprogrammed with a wireless induction typ...