Seven-day power reserve, cylinder escapement.
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Hour and quarter repeater, cylinder escapement, enamel case
Straight lever escapement (attributable to Marguerite Dupont who was a watchmaker in Alençon in 1795)
Robin style movement with cylinder escapement.
Chronometer with Robin escapement
Experimental verge escapement
Double comma escapement (double virgule)
Independent seconds movement, lateral lever escapement.
George Graham lever escapement, double-dial astronomical watch, equation of time. Double face watch.
Automatic winding with beating mass, perpetual monthly and weekly retrograde calendar, cylinder escapement.
Quarter hour repeater with lateral lever escapement
Quarter hour repeater by touch with special cylinder escapement.
Finished by son Pierre Le Roy, Sully escapement, calendar.
Chronometer with Earnshaw spring detent escapement, spherical balance spring.
Quarter hour repeater clock watch, verge escapement.
Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy