Moritz Grossmann OX Two – Unique Piece in Stainless Steel, Chinese Zodiac Collection

Part of the Moritz Grossmann Chinese Zodiac Collection created exclusively for Christie’s online auction, this one-off piece made from stainless steel features hand-painted dial with a miniature drawing according to the artistic design of Tony Käseberg. Including original painting of the artist.

The side view of the ox shows off the animal in all its glory. With his sketch style, the artist breaks up the familiar grid of a detailed drawing and gives the motif a ‘wild’ touch. The increasingly intense colour gradient shows the tonicity of the ox, which increases from the legs to the horns.

In line with its second position in the Chinese zodiac, the ox’s self-confident gaze is directed towards 2 o’clock. The ox is very hard-working, reliable, ambitious and determined. Oxes are extremely honest and sincere. Oxes work tenaciously and with a lot of patience until they reach their goal. But first they have to draw up an exact plan. The polished stainless steel hands, handcrafted in the manufactory, harmonise with the solid silver dial.

Years of birth under the sign of the ox: 1937, 1949, 1961, 1973, 1985, 1997, 2009, 2021
Name of the artist: Tony Käseberg

The artistically finished calibre 100.1 movement is visible though the generous transparent back made of sapphire crystal with an antireflective coating on one side. The pillar movement with well-proportioned components made of untreated German silver with various finishes forms different levels.

On the characteristic 2/3 plate with broad horizontal ribbing, the signet is engraved by hand. The Grossmann balance is visible in the curved plate cut-out and is borne by the stepped, hand-engraved balance cock with the typical fine micrometer screw.

Technical details


Manufacture calibre 100.1, manually wound, adjusted in five positions
Diameter: 36.4 mm, height: 5.0 mm
No. of parts 198
No. of jewels 20 jewels, 3 of which in screwed gold chatons
Escapement Lever escapement
Oscillator Shock-absorbed Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring with No. 80 Breguet terminal curve, Gustav Gerstenberger geometry
Balance Diameter: 14.2 mm, frequency: 18,000 semi-oscillations per hour
Power reserve: 42 hours when fully wound

Hours and minutes, Grossmann winder with pusher

Three-part, stainless steel case
Diameter: 41.0 mm, height: 11.35 mm
Crystal/display back: Sapphire crystal, antireflection-coated on one side
Operating elements: Crown in stainless steel to wind the watch and set the time, pusher in stainless steel to start the movement

Solid silver, hand-painted
Hands: Manually crafted from steel

Hand-stitched calf strap with prong buckle in stainless steel

Special features
Grossmann balance; hand setting override and start of movement with lateral pusher; space-saving modified Glashütte stopwork with backlash; adjustment with Grossmann micrometer screw on a cantilevered balance cock; Pillar movement with 2/3 plate and frame pillars in untreated German silver; 2/3 plate, balance cock, and escape-wheel cock engraved by hand; broad horizontal Glashütte ribbing; 3-band snailing on the ratchet wheel; raised gold chatons with pan-head screws; separately removable clutch winder; stop seconds for hand setting