FabR[Senior Patek Moderator]
26166
My pleasure. While I simply attribute the adoption of more sophisticated movements for the modern offering to the research evolution in this area, the topic of solar clocks is indeed interesting, especially from a historical perspective!
Jan 24, 2023,23:32 PM
Perhaps surprisingly for collectors, Patek has been a leader in the production of clocks and related timepieces powered in a variety of ways, since about the middle of the 20th century.
Among the several online sources that you can find on the broader topic, you might be interested in this scholarly piece that recently appeared on John Reardon's Collectability (John is a foremost Patek historian):
Hope you'll enjoy, and thanks again for joining my forum!
FabR