Moritz Grossmann BENU 37 & ATUM 37

Created for those who like smaller timepieces on their wrist, the slender cases of the BENU 37 and the ATUM 37 are inspired by their larger cousins. They have the poise and balance of their lineage, but they have a confidence and swagger all their own.

BENU 37
The rhomboid shape of the hands immediately identifies this watch as BENU, even in this smaller format. They are annealed to our signature brown-violet hue and they point to strongly drawn, curved brown-violet Arabic numerals.

The solid silver dial provides a sharp contrast and gives excellent legibility. The minute scale features the familiar BENU train-tracks.  These, combined with super-fine-tipped hands enable precise time reading.

ATUM 37
The ATUM 37 also masters its smaller proportions with style. The same colour scheme of argenté-coloured solid-silver dial, brown-violet numerals and like-coloured, spear-shaped ATUM hands gives this watch the same assured look as the BENU 37.

Elegant Roman numerals give this timepiece classic appeal. The fine tips of the hands once again mark the inexorable passage of the minute hand against the same charcoal train-tracks. And just as in the full-sized ATUM, the subsidiary seconds dial is recessed al at 6 o’clock and accentuated with a crisp, polished chamfer.

The BENU 37 and the ATUM 37 are powered by the manufacture calibre 102.1. This movement, with a graceful diameter of 26 mm and a height of merely 4 mm, has the classic 2/3 plate architecture. It relies on an asymmetric-arm escapement and a modified adjuster, both developed explicitly for this movement size.The display back reveals the typical Grossmann hallmarks and the High-Artistic finish.

Versions

BENU 37
Reference MG-001619
Case: 750/000 rose gold
Dial: Argenté, Roman numerals
Hands: Manually crafted, steel, annealed to a brown-violet hue

Reference MG-001618
Case: 750/000 white gold
Dial: Argenté, Roman numerals
Hands: Manually crafted, steel, annealed to a brown-violet hue

ATUM 37

Reference MG-001545
Case: 750/000 rose gold,
Dial: Argenté, Roman numerals
Hands: Manually crafted, steel, annealed to a brown-violet hue

Reference MG-001544
Case: 750/000 white gold
Dial: Argenté, Roman numerals
Hands:  Manually crafted, steel, annealed to a brown-violet hue

Technical details

Movement
Manufacture calibre 102.1, manually wound, adjusted in five positions
Diameter: 26.0 mm, height: 4 mm
No. of parts: 188
No. of jewels: 22, 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
Balance: Diameter 10.0 mm, frequency 21,600 semi-oscillations/hour
Power reserve: 48 hours when fully wound

Functions
Hours, minutes, and subsidiary seconds

Operating elements
Crown in 750/000 gold, with gemstone, for winding the watch and setting the time

Special features
Shock-resistant balance with inertia and poising screws, impulse pin integrated in rim; flat balance spring; balance staff with integrated safety roller; index adjuster with Grossmann micrometer screw; pillar movement with 3/5 plate, frame pillars and separately removable clutch winder; frame parts in untreated German silver; raised gold chatons with pan-head screws; remodified Glashütte stopwork with backlash; mainspring barrel with bilateral jewel bearings for optimised power management in the low-torque range; ARCAP train wheels; proprietary escapement with 18-tooth escape wheel

Case, dial and strap
Three-part, in 750/000 gold
Diameter: 37.0 mm, height 9.2 mm
Dial: Solid silver, Roman numerals
Hands: Manually crafted, steel, annealed to a brown-violet hue
Crystal and display back: Sapphire crystal, antireflective coating on one side
Strap: Hand-stitched alligator leather with prong buckle in 750/000 gold

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