DE GRISOGONO INSTRUMENTO GRANDE DATE GRANDE N0.1 RETAIL $14,100 NEW Pre-owned Unworn/ New Condition/100% Authentic, comes with Box and Papers, as seen in photos. Swiss made de Grisogono Instrument Grande No 1 made in Stainless Steel rectangle case shape measuring 40x47.5 mm diameter. Fixed bezel and a pair of mobile case horns. Automatic movement, power reserve up to ± 42hours. Displays a Silver guilloche finishing and unique designed dial with highly legible indexes with Superluminova hands, stick hour markers and Arabic numerals. Big double window date display at the 6 o'clock position. Opening in the case band at 9 o'clock, sapphire crystal, providing an unusual view of the movement. Decorated de GRISOGONO crest crown. . Scratch resistant Sapphire crystal, Skeleton caseback. Black leather strap with Grisogono hidden Butterfly Deployment buckle. Water resistant to 30m / 99ft. Display signed " de Grisogono ", Caseback inscribe & numbered, Movement signed... Movement... Mechanical automatic self-winding intricate movement calibre GD15-89 22-jewel ( based on the ETA 2892-A2 architecture) 28800vph4Hz, exclusive de Grisogono large date calibre oscillating weight, engraved with the words “INSTRUMENTO GRANDE”. Original opening in the case band at 9 o'clock: sapphire crystal providing an unusual view of the movement with a 42-hour power reserve...