Piece Unique
German watchmaker Moritz Grossmann celebrates its tenth anniversary in November. To mark this special occasion the independent watchmaker from Glashütte has released its eleventh special model, the Atum Backpage Platinum. This platinum single edition piece offers a showcase for Grossmann's watchmaking art.
The handcrafted movement has been mirrored and shifted to the dial side. Thanks to an unexpectedly large dial cut-out, the characteristic movement details such as Grossmann's balance wheel, a hand-engraved balance cock and three band snailings on the ratchet wheel can be fully observed while on the wrist. Wide Glashütte stripes are applied to both sides of the movement and the Moritz Grossmann logo is hand engraved on the dial side.
On the back of the movement, the winding and hand-setting mechanisms are openly integrated into the train bridge and can be observed in their full functionality. Almost all parts in the movement are mirrored in order to guarantee their function even when mounted in the opposite position.
b>Technical Specifications:
The three part case, in platinum, measures 41mm x 11.3mm. It has an AR-coated sapphire crystal and a sapphire display back.
Movement is the German manual-wind Grossmann in-house caliber 107.0 with 24 jewels (7 in screwed gold chatons), 18,000 vph and a power reserve of 42 hours. It is adjusted to five positions. It features a 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 2/3 plate on dial side, frame pillars and separately removable clutch winding mechanism; visible hand setting train on the back side of the movement; frame parts in untreated German silver; Grossmann winder with pusher and stop seconds; 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; balance cock and crown wheel, intermediate winding wheel and ratchet wheel with stopwork on the modified spring barrel bearing with a gold chaton in the ratchet wheel; dial train wheels spoked and beveled, beneath polished bridge.
Functions are: hours, minutes, and subsidiary seconds with stop seconds. Grossmann winder with pusher. Crown in Platinum, for winding the watch and setting the time, pusher in Platinum for starting the movement.
It has a solid silver dial, with baton hour markers in precious metal. Minute scale on the rim. The hands are manually crafted, in steel, and annealed to a blue hue.
It comes on a dark blue hand-stitched alligator leather strap with a platinum buckle.
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