Urban Jürgensen n.677

Annual calendar with manual equation of time, thermometer (Bongrand system)

Robert Robin, Horloger du Roi, n.59

Lever escapement and thermal compensation

Walthan modello 1883 18s.

Skelectric watch with Masonic decoration.

Dufour et Fol a Geneve

Decimal watch with double time indication on a 24-hour basis, verge escapement.

Ch.phe Blanchard à Porrentruy , n.6402

Decimal watch with calendar and special escapement

Robert Robin, Joseph Thaddeus Winnerl

Chronometer made by Joseph Thaddeus Winnerl on a movement by Robert Robin

Vacheron & Constantin Genève n.10313

Hour and quarter repeater and alarm with cylinder escapement.

Guillarmod Frères

Self-winding hour and quarter repeater with pedometric oscillating mass, cylinder escapement.

Vacheron & Constantin Genève

Alarm with verge escapement

Duval à Frèville an 6

Quarter hour repeater clock watch, verge escapement.

Strömgren og Olsen n.665

Navigation chronometer with sidereal time indication.

Lefevre a Paris

Detent Lever escapement invented by Robert Robin. Restored by Breguet.

Breguet, n.1782

“Rèpètition à minutes” chronometer with double-wheel duplex escapement, sold to the Spanish Princes in Valençay on 29 May 1809 for the price of 2,400 F.

Anonymous attributable to Charles Edouard Jacot, Switzerland

Dead central seconds watch with star duplex escapement invented by Charles Edouard Jacot with 1/4 second diablotine

Chemisard à Bordeaux n. 2.500

Side lever experimental escapement