Sigismund Rentzsch, London

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Charles Mairet, n. 228

Dead seconds watch with lever escapement by Pouzait

Gregson Jean Hor. Du Roy

Virgule escapement

Breguet, n.2644.

Montre a répétition de quart, a grand second d’un coup, sur le principes de chronomètre.

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.

Vacheron & Constantin Genève

Alarm with verge escapement

Blondeau Antoine horloger du Roi , rue de la Paix 19, à Paris, n. 1634-24720.

Twin barrel chronometer, monthly calendar with ruby lateral lever escapement

Robert Robin a Paris, n.42

Side lever escapement.

Andrè Hessen a Paris

Weekly winding device, monthly calendar, with comma escapement

Robert Robin, Horloger du Roi, n.44

Scappamento ad ancora e compensazione termica

Breguet n.753

Quarter andhour repeater, jumping hours device with experimental ruby verge escapement.

Breguet, n.3002

“Répétition des quarts à ponts moyenne, 15 lignes, boîte or n. 3510, échappement à cylindre”. Sold on 05 November 1817 to Madame Soehnée. Monthly calendar and secret compartment containing a lock of hair.

Tschiffelj, Berne Swiss,

Double wheel verge escapement.

Julien Le Roy n.4073 finished by his son Pierre Le Roy

Hour and quarter repeater with verge escapement

Breguet n.685

“Montre de souscription a tact” sold to the brother of the Spanish Consul (Monsieur de la Serna) in Vendemiaire year X (1802) for 1,100 FF.

Robert Robin a Paris n.212

Hour and quarter repeater, cylinder escapement, enamel case

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