Numerous connoisseurs have suggested that the exquisite characteristics of the manufacture calibres should be showcased in a particularly exposed position. Thanks to the inventiveness of Grossmann’s engineers, this was consummately accomplished with the calibre 107.0 movement. Here, pure watchmaking artistry has gained a new presence.
So far, highlights such as the Grossmann balance, the hand-engraved balance cock or the ratchet wheel with three-band snailing could only be admired through the display back. Now, with the development of the mirrored calibre, they can be shown on the dial side. This model presents the “back page” of the movement in an unusually large dial aperture that doubles as a prominent stage. The BACKPAGE comes in an 18-watch limited edition in platinum as well as in rose gold.
The transparent sapphire crystal dial reveals the sophisticated mechanics and superb craftsmanship of all movement parts. Both the rose gold and white gold versions of the BACKPAGE Transparent are limited to eight pieces each worldwide.
Manufacture calibre 107.0, manually wound, adjusted in five positions
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 bevelled, beneath polished bridge
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