Extremely rare and very fine dead center-seconds mantle regulator with one-second constant force detent escapement. Honor Pons, invented and executed in 12 months (Sept. 24, 1803 - Sept. 23, 1804)
Anonymous (not verified)
23 October 2024
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Extremely rare and very fine dead center-seconds mantle regulator with one-second constant force detent escapement. Honor Pons, invented and executed in 12 months (Sept. 24, 1803 - Sept. 23, 1804)
Precision Timekeeper with 1 Complication; Honor Pons, invented and executed in an XII (Sept. 24, 1803 - Sept. 23, 1804) Extremely rare and very fine d...