The Tufnut model incorporates all the classic virtues associated with the Moritz Grossmann manufactory: a simple design that embodies pure understatement coupled with high-quality materials that are finished by hand. Moreover, every single detail, no matter how small, is absolutely perfect. The model from the TEFNUT line has now been given a completely new look: with a dial that has been hand silver-plated by friction, the new TEFNUT silver-plated by friction exudes a confident and elegant presence
MORITZ GROSSMANN TEFNT 39 SILVER BY FRICTION
Movement: Manufactory calibre 102.1, manual winding, regulated in five positions.
No. of parts: 188.
Jewels: 22, of which 3 in screwed gold chatons.
Escapement: Lever escapement.
Oscillator: Shock-resistant Grossmann balance with four inertia screws and two 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: Hour, minute.
Operating elements: Crown in 750/000 gold or stainless steel for winding the watch and setting the time.
Case dimensions: Diameter: 39.0 mm, height: 8.5 mm.
Movement dimensions: Diameter: 26.0 mm, height: 3.5 mm.
Case: Three-part, in stainless steel.
Dial: Engraved, set in black and hand silver-plated by friction Hands Manually. crafted, steel, annealed to a brown-violet hue Crystal/display backSapphire crystal, antireflective coating on one side.
Strap: Hand-stitched alligator leather with prong buckle in steel.
Special features: Shock-resistant balance with inertia and poising screws, impulse pin integrated in rim; flat balance spring; balance staff with integrated safety roller; adjustment with Grossmann micrometer screw; plate movement with 3/5 plate, frame pillars and separately removable clutch winding mechanism; 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.