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De Grisogono Instrumento Uno Ref. UNO DF S10

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

circa 2010

This De Grisogono Instrumento Uno, reference UNO DF S10, is a limited edition two-time zone wristwatch, numbered 207/500. The watch is constructed in 18k white gold and features extensive diamond decoration, including 478 diamonds totaling 8.11 carats on the case and an additional 147 white and black diamonds on the dial.

The black lacquered dial displays 18k white gold Arabic numerals and functions for a second time zone and date. The timepiece is powered by an ETA 2892A2 caliber movement with a black finish and 21 jewels. It is presented on a leather strap fitted with an 18k white gold double deployant clasp, which is also set with 38 diamonds totaling 1.59 carats. The auction description reports that the crown is set with a black diamond.

Evidence at a glance

Linked sources
1
Photograph views
1
Catalogue references
0

Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.

Technical characteristics

Type
Two-time zone wristwatch
Clasp
18k white gold set with 38 diamonds
Maker
De Grisogono
Movement
ETA 2892A2
Reference
UNO DF S10
Case Number
000507
Case Material
18k white gold
Place recorded
Switzerland
Diamond Setting
478 diamonds, 8.11 carats on case
Limited Edition
207/500
Maker / attribution
De Grisogono

Design

Visible features
• Case and buckle are heavily set with white diamonds • Dial features distinct second time zone sub-dial • Crown is set with a single black diamond • Strap appears to be a textured black leather or stingray finish
Case and Dial Construction
The watch features a rectangular case crafted from 18k white gold, measuring 33 x 57 mm including the lugs. The exterior is extensively adorned with diamonds, incorporating 478 stones amounting to 8.11 carats. The crown is decorated with a black diamond. The dial is finished in black lacquer and incorporates 18k white gold Arabic numerals. The indexes are further embellished with 135 white diamonds totaling 0.41 carats and 12 black diamonds totaling 0.04 carats. The dial design includes a sub-dial for a second time zone and a date display.
Provenance and Identification
This watch is identified as a member of a limited edition of 500 pieces, specifically numbered 207/500. The case back or internal records indicate the serial number 000507. The watch is accompanied by a branded leather strap and an 18k white gold double deployant clasp, which continues the diamond-set theme of the watch with an additional 38 diamonds totaling 1.59 carats.
Movement and Mechanical Details
The timepiece is driven by the ETA 2892A2 caliber, a self-winding movement featuring 21 jewels. The movement is finished in black. The watch functions as a water-resistant, two-time zone instrument with an integrated date display.

Identification

Reference
UNO DF S10
Serial number
000507
Source note
Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.

Research required

  • Research required: The auction description notes that an overhaul is recommended for the movement at the buyer's expense
  • Research required: The actual long-term durability of the factory diamond setting on the case and clasp is not assessed
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