The TEFNUT model is a watch that reflects a decidedly reduced form and a straightforward approach to time keeping. Its personality eliminates all doubt that horological class is also a question of appearance.
Exquisitely cambered, rose gold hour markers, convex numerals at the 6 and 12 o‘clock positions, manually-crafted hands and a slender, solid 18ct rose gold case are defining elements of this strikingly simple, technically perfect timepiece.
A totally reimagined mechanical heart of similarly subtle elegance beats inside the handsome case. The remarkably thin movement exhibits all of Grossmann’s signature hallmarks, yet is absolutely unique in its linear-symmetric architecture. This is immediately visible with a glance at the modified, abrupt cut of the 3/5 plate which juxtaposes the exquisitely engraved calibre that lies beneath.
TEFNUT Rose Gold is designed to convey a subtle message of style with its minimalistic dial and streamlined case as well as afford the wearer a profound sense of horological mastery from what lies underneath.
The elegant silver dial takes pride of place within the beautifully-finished massive gold case creating a classic timepiece of significant value.
Case: 750/000 rose gold
Hands: manually crafted, steel, annealed to a brown hue
Movement: Manufacture calibre 102.0, manually wound, adjusted in five positions
No. of parts: 196
No. of jewels: 26, 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 per hour
Power reserve: 48 hours when fully wound
Functions: Hours and minutes
Operating elements: Crown in 750/000 gold, to wind the watch and set the time
Case dimensions: Diameter: 39.0 mm, height: 8.5 mm
Movement dimensions: Diameter: 26.0 mm, height: 3.45 mm
Case: Three-part, in 750/000 gold
Dial: Solid silver
Hands: Manually crafted, steel or stainless steel
Crystal and display back: Sapphire crystal, antireflective coating on one side
Strap: Hand-stitched alligator strap with pin buckle in rose gold (optional folding clasp in rose gold)
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; plate movement with 3/5 plate, frame pillars, and separately removable clutch winding mechanism; 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; ARCAP train wheels; proprietary escapement with 18-tooth escape wheel