Bulgari Papillon Chronograph

This exceptional chronograph timepiece from Bulgari Daniel Roth collection 2010 offers a resolutely original approach to short-time measurement with a truly distinctive face. The exceptional arrangement of the various items of information on the dial, as well as their actual read-off, endows it with an exclusive style bearing no relation to customary chronographs.

The dial centre of this exceptional creation features the minutes read off via an ingenious mechanical device positioned on a bearing disc. The latter performs a complete 360° rotation in two hours and carries two independent pivoting lozenge-shaped hands that in turn glide across a 180° segment with a graduated scale running from 00 to 60 minutes.

While one of them, which we will call hand A, is positioned on the semi-circular segment with its tip pointing to the minutes, hand B remains retracted almost throughout the disc rotation. When the former reaches the 55th minute on the display segment, the latter extends through a gradual quarter-turn to take up its position parallel to hand A on the 00 minute indication. And as soon as the minutes restart from zero, hand A progressively retracts and remains so for the following 55 minutes.

The entire set of functions is powered by the entirely manufacture-made DR Calibre 2319, an integrated Frédéric Piguet mechanical self-winding chronograph movement with column-wheel and vertical coupling clutch, along with an exclusive Daniel Roth complication module. It is endowed with a 38-hour power reserve and beats at a frequency of 21,600 vibrations per hour (3Hz).

This sophisticated movement is treated to excellent finishing including circular graining on the mainplate and Chronograph Bridge, as well as Côtes de Genève adorning the bridge of the self-winding mechanism. All the bridges are chamfered and polished, as are the screw heads. The visible steel movement parts are satin-brushed, chamfered and polished.

The calibre is housed within a slightly cambered and extremely comfortable double-ellipse case in rose gold that is water-resistant to 30 metres. A domed glareproofed sapphire crystal protects the split-level dial graced with alternating white-lacquered and black gold satin-brushed surfaces – the exclusive and appealing signature feature of the Bulgari Collection driven by Daniel Roth calibres.

The Papillon Chronograph model is fitted with an alligator leather strap equipped with a triple-blade rose gold folding clasp.

Technical details
Model: BULGARI PAPILLON CHRONOGRAPH

Movement
Reference: DR2319, mechanical self-winding calibre
Diameter: 11 ½  lignes
Jewelling: 38 jewels
Power reserve: 38 hours
Frequency: 3 Hz – 21,600 vph
Winding: Unidirectional automatic
Balance: Three-spoke ring balance in Glucydur
Index assembly: Fine adjustment screw
Rating: 5 positions
Bridges: Côtes de Genève decorative motif
Mainplate : Circular-grained
Oscillating weight: Bimetallic
Bridge rims: Chamfered and polished
Jewel surrounds: Tone-on-tone diamond-polished

Displays
Jumping hours, papillon (butterfly) minutes, retrograde hour and minute chronograph counters

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