H.O. NARDIN TOURBILLON
H. O. Nardin, Locle, Suisse.
Very fine and important, 18K gold, keyless, one minute
tourbillon pocket in its work case.
Three-body, 'bassine', polished, reeded band.
White enamel with radial Roman numerals and sunk
subsidiary seconds. Blued steel Breguet hands.
19''', rhodium plated, three quarter plate, 'fausses côtes'
decoration, 19 jewels, central ruby in gold screwed chatons,
lateral lever escapement, cut bimetallic balance, blued steel
balance spring with terminal curve. One minute tourbillon
with lateral lever escapement, cut bimetallic compensation
balance with gold temperature screws, Breguet balance
spring with outer terminal curve, polished steel carriage.