Graham, Silverstone Tourbillograph Full Black collection
| Ref.: | 2TSAB.B02A |
| Description: | Functions Column wheel chronograph (seconds, 30 minutes and 12 hours counter). Tourbillon mechanism Hours, minutes, seconds Calibre Calibre G1780, automatic column wheel chronograph-tourbillon, 28'800 A/h (4 Hz), Incabloc shock absorber Ruthenium blackened movement with Haute Horlogerie finishing. Perlages, sandblasted, manually chamfered and polished bridges and bottom plate, column wheel with polished segments and black low-friction coating, ruthenium oscillating weight with skeletonised rotor and 925 sterling silver segment 34 jewels Power reserve: 48 hours Blackened tourbillon cage: 48 components, 0.485 grams. Off-centre construction at 11 o'clock. Complete see-through tourbillon. Two patents. Double bridge construction with black PVD coated upper bridge. "Black gold" balance Case 48 mm steel with black PVD case Steel with black PVD right hand start / stop and reset pushers with "Clous de Paris" high grip pattern Steel bezel with black PVD Domed sapphire crystal, anti-reflective coating on both faces See-through sapphire crystal case back Water resistance 160 feet / 50m Dial Black dial with tachymeter scale on external ring Rhodiated hands and numerals Strap Black croco? Black ceramic folding buckle |
| Condition: | Brand new in box with papers & certificate |
