Moritz Grossmann BENU Anniversary Unique

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On 11 November 2008, Christine Hutter founded Grossmann Uhren using the distinguished name of the co-founder of the Glashütte watch industry, Moritz Grossmann. In doing so, she ensured that the legacy of the highly respected watch pioneer was revived after around 130 years.

Since 2008 the company has been manufacturing watches to the highest standards in a classic yet contemporary design. The day of the anniversary is crowned by the release of a very special single edition piece, the BENU Anniversary Unique. In its luxurious platinum finish this unique timepiece is reminiscent of the very first watch model, the BENU.

The deep blue grand feu enamel dial of the BENU Anniversary Unique is a charmingly precise rarity that is in contrast with the delicate white Arabic numerals. Hand polished stainless steel hands complete the elegant design of this classic watch. Founder and CEO Christine Hutter has personally signed the BENU Anniversary Unique. Her signature is applied in the form of a gold thread in the sapphire crystal back. The sapphire glass provides a view of the hand engraved solid gold balance cock.

Moritz Grossmann was a widely respected author who published in several languages. The visionary inspired people throughout Europe and even in the United States with his groundbreaking technical writings. Grossmann supported the development of the Glashütte watch industry and passed down his knowledge to generations of watchmakers.

The BENU Anniversary Unique is offered with the calibre 100.1 in artistic hand finish as a single edition 1 of 1, written on the caseback of the limitation 05/10 2008 – 2018.

Technical details

Movement
Manufacture calibre 100.1, manually wound, adjusted in five positions, gold balance cock
Diameter: 36.4 mm, height 5.0 mm
No. of parts: 198
No. of jewels: 20, of which 3 in screwed gold chatons
Escapement: Lever escapement
Oscillator: Shock-resistant Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring with No. 80 Breguet terminal curve, Gerstenberger geometry
Balance: Diameter 14.2 mm, frequency 18,000 semi-oscillations per hour
Power reserve: 42 hours when fully wound

Functions
Hours and minutes, subsidiary seconds with stop seconds, Grossmann winder with pusher

Operating elements
Crown in 950 Platinum for winding the watch and setting the time, pusher for starting the movement

Case
Diameter: 41.0 mm, height 11.35 mm
Three-part, 950 Platinum
Crystal and display back Sapphire crystal, antireflective coating on one side

Dial
Grand feu enamel, Arabic numerals
Hands: Manually crafted, steel, annealed to a brown-violet hue

Strap
Hand-stitched alligator strap with prong buckle or fold-over clasp in 950 Platinum

Special features
Grossmann balance; hand setting override and start of movement with lateral pusher; space-saving modified Glashütte stopwork with backlash; adjustment with Grossmann micrometer screw on a cantilevered balance cock; pillar movement with 2/3 plate and frame pillars in untreated German silver; 2/3 plate, balance and escape-wheel cock hand-engraved; broad horizontal Glashütte ribbing; 3-band snailing on the ratchet wheel; raised gold chatons with pan-head screws; separately removable clutch winding mechanism; stop seconds for hand setting