3053. M.Wolfensberger, Le Locle. A remarkable unusual and fine German silver open face keyless wind chronograph pocket watch with dual time and split second functions, Bulletin de Première Classe de l'Observatoire National de Besançon, 1933, regulated by Breguet M. Wolfensberger, Le Locle. Silver-plated open dial pocket chronograph with second time zone and split-seconds winding function Date: Circa 1900 Movement: Gilt full plate, Swiss lever, cut and compensated balance, No.890, Vipère hallmark Dial: White enamel, black Arabic numeral hour markers, black inner minute track, black outer 1/5th second divisions, sunk subsidiary dials at 2 and 10 for running seconds and 30 minute recording, dual time dial at 6, blued steel 'Breguet style' hands, centre chronograph hand Case: Brushed and polished hinged round, textured back, split second button to ribbed band, inner cuvette engraved 'Bulletin de Première Classe de l'Observatoire National de Besançon, 1933, réglé par Breguet', No.890-24 Signed: Case & movement Size: 56mm Accompaniments: Fitted box