de Grisogono Instrumento Grande Open Date New Version

This updated version of the Instrumento Grande Open Date can be defined by its elegant, easy-to-read dial. The 2, 4, 8 and 11 o’clock hour markers have been removed and the de Grisogono logo shifted to 9 o’clock, improving on the original Instrumento Grande’s readability and functionality. With its open dial displaying two exceptionally large discs forming the date, the Instrumento Grande Open Date combines utility and elegance.

Two perfect circles meeting in a strict rectangle, triangles contrasting with the case’s right angles – de Grisogono reinvents geometry with the Instrumento Grande Open Date, a harmonious combination of curves, straight lines and angles. The guilloché brass dial opening, divided into quarters, reveals two large date discs, with the current date appearing in a transfer aperture at 6 o’clock, where the discs overlap.

Offset towards 3 o’clock, the two large discs add to the originality and stylishness of this modern, refined timepiece. Several original details contribute to the perpetual-movement design of the Instrumento Grande Open Date. Its large dauphine hands are coated in Superluminova to match the pink gold case, as are the bevelled-arrow markers at 3, 9 and 12 o’clock, arrayed around the slowly rotating discs.

Like the Instrumento Grande, the Instrumento Grande Open Date features an exceptionally large case. A well proportioned horizontal rectangle, it displays generously rounded hinged strap connectors. With its ingenious, stunning and stylish “at-a-glance” calendar, Fawaz Gruosi’s new design will delight everyone with an eye for the unusual. Not only has its dial revealed its every secret, its heart can also be observed through an opening at 9 o’clock in the case rim. Protected by a sapphire crystal, it provides a penetrating view of the movement from an unexpected angle.

Available in pink gold only, Instrumento Grande Open Date comes in a choice of four masculine dial styles: brown with brown discs and white numerals, black with white discs and black numerals, silvered with white discs and black numerals or set with baguette-cut white diamonds.

Technical details

Model: Instrumento Grande Open Date

Movement
Ref. no. de Grisogono GD 15-89 (Grande Date)
Movement: Selfwinding
Functions
Hours-minutes, date
“Large” skeleton dial revealing the units and tens discs (forming the Grande Date at 6 o’clock)

Case
Metal: 18 kt 5N pink gold
Shape : Rectangular
Dimension(s): Length: 48.30 mm/ Width: 41.11 mm/ Thickness: 12.51 mm
Case middle: Polished
Fasteners: Two movable fasteners via an integrated hinged mechanism, colour-matched with the case middle
Crystal: 4 sapphire crystals
– 2 rectangular, shaped (bezel and caseback)
– 1 shaped according to case middle profile, flat (side)
– 1 shaped according to profile of units and tens discs, flat (linked to the dial)
Caseback: Open, shaped, fastened by four screws, engraved (dG)
Crown : at 3 o’clock, stamped corporate emblem, time and date setting
Water resistance: 30 m (3 atm)

Strap
Grained calfskin, slightly rounded, crocodile for the S25D
Clasp: Triple folding, colour-coordinated with the case

Dial
“Skeleton” open, with large date transfer aperture at 6 o’clock, visible discs, stamped guilloché pattern
Four versions
– Brown with brown discs and white numerals
– Black with white discs and black numerals
– Silvered with white discs and black numerals
– Black with white discs and black numerals, set with white baguette-cut diamonds

Hour markers
Large appliqué markers at 3, 9 and 12 o’clock
Colour 5N pink with Superluminova overlay

Hands
Dauphine style, colour 5N pink with Superluminova overlay matching the case

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