Description
Moritz Grossmann BENU Hamatic Enamel White Gold
For its 200th anniversary celebrations in 2026, Moritz Grossmann introduces a particularly refined interpretation of its distinctive HAMATIC collection. The BENU Hamatic Enamel White Gold combines an intensely black enamel dial, individually applied white gold Arabic numerals and a fascinating mechanical movement within an elegant 18-carat white gold case. Produced in a limited edition of only eight watches, this anniversary model honours the birth of Carl Moritz Grossmann on 27 March 1826, bringing together traditional Saxon watchmaking principles and the contemporary engineering of the Glashütte manufactory.
The visual character of the white gold edition is defined by its carefully balanced monochromatic design. Against the rich, glossy black enamel dial, the solid white gold Arabic numerals provide a crisp, understated contrast, while the finely shaped and manually polished steel hands add another dimension of traditional craftsmanship. The use of Arabic numerals is especially significant, marking a departure from the Roman numerals previously associated with the HAMATIC collection. Completing the historical design is the ‘M. GROSSMANN’ signature in its 1875-style lettering, a direct reference to the original watchmaking heritage of the brand.
Creating the black enamel dial involves an intricate series of applications, firings and finishing processes. Finely prepared enamel is applied to the dial blank in successive layers, with each layer subjected to intense heat before being carefully cooled. This traditional technique produces the exceptional depth, smoothness and lustre that distinguish a genuine enamel surface. The process is demanding, with even the smallest imperfection potentially requiring a dial to be rejected. The completed dial offers an enduring beauty that is particularly striking alongside the cool tones of the white gold case.
The technical centrepiece is Moritz Grossmann’s manufacture calibre 106.0, an unusual automatic movement that replaces the conventional winding rotor with a sophisticated oscillating hammer system. Inspired by historic automatic winding concepts, the mechanism uses a pendulum-style weight that moves in response to the wearer, with bidirectional click wheels and a precisely engineered reduction gear transferring energy to the mainspring. This remarkable arrangement comprises part of a 312-component movement, regulated in five positions and providing a 72-hour power reserve when fully wound.
Through the sapphire exhibition case back, the calibre reveals an impressive combination of traditional finishing and mechanical construction. Its architecture incorporates an untreated German silver two-thirds plate, hand-engraved balance cock, broad Glashütte ribbing, double-band snailing and raised gold chatons. The distinctive Grossmann balance features a micrometer screw adjustment system, while a commemorative ‘1826’ engraving on the cantilevered balance cock acknowledges the birth year of the manufacturer’s namesake. These details reflect the meticulous standards of hand craftsmanship that define Moritz Grossmann’s approach to fine watchmaking.
The watch is housed in a polished, three-part 18-carat white gold case measuring 41 mm in diameter and 11.35 mm in height. Sapphire crystal protects the dial, while a matching transparent case back provides a clear view of the unusual automatic movement. A hand-stitched black alligator leather strap, secured by a white gold prong buckle, completes the restrained aesthetic. Combining a traditional enamel dial, exceptional movement finishing and an unconventional winding system, the Moritz Grossmann BENU Hamatic Enamel White Gold is a rare expression of independent German watchmaking, with just eight examples produced worldwide.
Technical Specifications
Edition and Heritage
- Special edition celebrating the 200th anniversary of Carl Moritz Grossmann’s birth
- Limited to 8 pieces worldwide
- Introduced October 2026
Case and Construction
- Three-part case manufactured from 750/000 (18-carat) white gold
- Case diameter: 41.0 mm
- Case height: 11.35 mm
- 750/000 white gold crown for winding and setting the time
Dial and Indications
- Black enamel dial
- Applied Arabic hour numerals in solid white gold
- Historic ‘M. GROSSMANN’ signature in 1875 lettering
- Hours and minutes
- Small seconds indication
- Stop-seconds mechanism for precise hand setting
Hands
- Manually crafted polished steel hands
Manufacture Movement
- Moritz Grossmann calibre 106.0
- Mechanical automatic winding
- Oscillating hammer winding mechanism
- Regulated in five positions
- 312 individual components
- 38 jewels, including 3 in screwed gold chatons
- Power reserve: 72 hours when fully wound
- Movement diameter: 36.4 mm
- Movement height: 5.15 mm
Hammer-Winding Architecture
- Pendulum-style oscillating hammer weight
- Bidirectional automatic winding through click wheels
- Click pawl in the reduction gear
- Idler with pawl clicks
- Separately removable clutch winding mechanism
- Manual yoke winding system
Escapement and Regulating System
- Traditional lever escapement
- Shock-resistant Grossmann balance
- 4 inertia screws and 2 poising screws
- Nivarox 1 balance spring
- Balance diameter: 10.0 mm
- Frequency: 21,600 semi-oscillations per hour (3 Hz)
- Grossmann micrometer screw regulation on cantilevered balance cock
Movement Finishing and Decoration
- Pillar movement with two-thirds plate and pillars in untreated German silver
- Hand-engraved two-thirds plate
- Hand-engraved cantilevered balance cock
- Commemorative ‘1826’ engraving on balance cock
- Wide horizontal Glashütte ribbing
- Double-band snailing on the mainspring barrel
- Raised gold chatons with pan-head screws
Crystal and Exhibition Case Back
- Sapphire crystal with antireflective coating on one side
- Sapphire crystal display back revealing the manufacture movement
Strap and Fastening
- Hand-stitched black alligator leather strap
- Prong buckle manufactured from 750/000 white gold
