Swiss & German

A LARGE AND EXCEPTIONALLY RARE SILVER OPEN-FACED KEYLESS WATCH THE LONGINES MOVEMENT LATER MODIFIED TO INCORPORATE A ONE MINUTE FLYING TOURBILLON WITH SPRING DETENT CHRONOMETER ESCAPEMENT ORIGINALLY RETAILED BY HERPY ARNOLD, BUDAPEST, 1925, NO.4190747

• Movement: frosted gilded modified Longines calibre 24.99, the Earnshaw-type spring detent chronometer escapement mounted within a one-minute flying tourbillon carriage, large guillaume balance, diamond endstone, signed and numbered Longines 4190747
• Dial: white enamel dial, Arabic numerals, black outer minute ring, sunken dial centre and subsidiary seconds dial, blued steel hands, signed Longines Herpy Arnold Budapest
• Case: plain polished silver case, pink gold capped crown, the cuvette signed Longines and with commemorative exhibition medallions, engraved '7 Grand Prix', case and cuvette numbered 4190747
diameter 68mm

Provenance:
Galerie Koller Zürich, November 1985