Albert G. Piguet, Le Sentier

AN EXTREMELY RARE AND VERY FINE OPEN-FACED KEYLESS WATCH BASED ON THE PRINCIPLES OF RESONANCE WITH DOUBLE LEVER ESCAPEMENT AND TWO GUILLAUME BALANCES, IN ASSOCIATED GOLD CASE WITH EXHIBITION BACK MOVEMENT 1933, NO.220, CASE 1970S

• Movement: damascened, single train with differential gearing releasing power to the double lever escapement, two Guillaume balance each with swan-neck precision regulation, 29 jewels, signed Albert G. Piguet, Le Sentier, 1933
• Dial: white enamel, Roman numerals, outer minute ring, sunken subsidiary seconds, blued steel hands
• Case: later purpose-built gold case with glazed back
diameter 49mm

Provenance:
Galerie d'Horlogerie Ancienne, IX, 15 October 1978, lot 248
Antiquorum Geneva, 18-19 April 1998, lot 611 (also illustrated on back cover).