Important Modern & Vintage Timepieces

Hong Kong, Nov 30, 2025

LOT 351

MORITZ GROSSMANN, BENU TOURBILLON, PIECE UNIQUE 1/1, TOURBILLON, 18K WHITE GOLD

HKD 600,000 - 1,200,000

EUR 67,000 - 134,000 / CHF 63,000 - 126,000 / USD 78,000 - 156,000 / JPY 11,900,000 - 23,800,000

A very fine and unique, manual-winding 18K white gold tourbillon wristwatch with stop seconds mechanism, brown dial and transparent caseback .


Grading System
Grade:
Case: 1-8

As new

Slightly scratched

Movement: 2*

Very good

Overhaul recommended, at buyer's expense

Dial: 1-01

As new

HANDS Original

Brand Moritz Grossmann

Model BENU TOURBILLON

Year circa 2018

Bracelet Strap with Moritz Grossmann 18K white gold deployant clasp

Diameter 43mm.

Caliber 103

Weight 143gr. (approx.)

Signature dial, case and movement

Notes

This Mortiz Grossmann PIECE UNIQUE represents the pinnacle of Glashütte’s horological mastery. A magnificent flying three-minute tourbillon rotates beneath the brown silver dial, showcasing centuries of German watchmaking tradition with modern innovation. The 18K white gold case houses a masterfully finished manual-winding movement , the CALIBER 103.0 in High Artistic Finish features a flying three-minute tourbillon with screw-secured driving wheel and distinctive V-shaped balance bridge. The innovative stop seconds mechanism uses a pivoting fine-hair brush at the balance wheel rim (patent pending). The proprietary Grossmann winding mechanism and pusher complement the ingenious second stop with a brush made of human hair to halt the balance with unprecedented delicacy and precision.