Louis-Elisée Piguet, Les Brassus, Movement No. 1911, Case No. 1911, 56 mm, 154 g, circa 1884

A heavy Swiss minute repeating hunting case pocket watch with quarter hour self strike, sold to Louis Audemars, Les Brassus (Movement No. 15367)
Case: 18k gold, polished, gold dome, case maker's punch mark "GS" (George Stockwell / Stockwell & Co. Ltd., Birmingham), pusher for repetition at "6", lever for choosing between "Sonnerie" and "Silence". Dial: enamel, Arabic numerals, auxiliary seconds, blued Breguet hands. Movm.: bridge movement, frosted, gilt, signed, 2 hammers / 2 gongs, Geneva quality hallmark, 2 barrels, tandem winding with mirror polished click on the top, gold screw compensation balance, counterpoised lever.

Two comparable watches are illustrated in: "Louis Benjamin Audemars - Sein Leben und Werk. Aufstieg und Niedergang einer Uhrmacherdynastie" by Hartmut Zantke, Leonberg, 2003, p. 424 ff.