Wednesday, June 15, 2011

Graham Silverstone Tourbillograph

You're not going to find any green on this tour-billion/chronograph timepiece, but I'm ok with that. In fact I think this watch pulls off the full black look just fine. Made by Graham London here are some of the specs for this $50,000(US) watch...

Column wheel chronograph (seconds, 30 minutes and 12 hours counter). Tourbillon mechanism
Hours, minutes, seconds
Calibre G1780, automatic column wheel chronograph-tourbillon, 28’800 A/h (4 Hz),
Incabloc shock absorber
Blackened movement finished with perlages, manually chamfered and polished
edges, column wheel with silver polished segments on base cog wheel with black
low-friction coating, skeletonised rotor with “black gold” oscillating weight
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 ruthenium balance
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 with black PVD with black carbon ring
Domed sapphire crystal, anti-reflective coating on both faces
See-through sapphire crystal case back
Water resistance
160 feet / 50m
Black dial with tachymeter scale on external ring
Rhodiated hands and numerals
Black croco
Black ceramic folding buckle


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