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The Encyclopedia of Horology

Wristwatch · Astronomical wristwatch

Christiaan van der Klaauw CVDK Planetarium ref. CKPT33B4

Partially verified

This Christiaan van der Klaauw CVDK Planetarium wristwatch, reference CKPT33B4, features a round 40 mm stainless steel case housing a dark aventurine dial with Roman numeral hour markers. The dial incorporates a concentric heliocentric planetarium display at 6 o'clock and an annual calendar indicator displaying month and date at 12 o'clock, topped by the brand's sun motif. According to the auction catalogue, the watch is powered by the automatic calibre CVDK7386 with 35 jewels and twin barrels, dating to circa 2022.

Front view of the Christiaan van der Klaauw CVDK Planetarium wristwatch
Front view of the Christiaan van der Klaauw CVDK Planetarium wristwatch — Phillips. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.phillips.com
Category
Wristwatch · Astronomical wristwatch
Maker / attribution
Christiaan van der Klaauw
Reference
CKPT33B4
Catalogue / lot identifier
938
Source-reported date
Circa 2022
Country
Netherlands

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Identity and Model Context

Catalogued under reference CKPT33B4 and case number PTSB05, this wristwatch is designated as the CVDK Planetarium from Dutch watchmaker Christiaan van der Klaauw. According to the auction catalogue, it dates to circa 2022 and was consigned as property from the original owner.

The auction essay notes that the CVDK Planetarium was created in 1999 as a mechanical heliocentric planetarium, following the maker's earlier astronomical clocks and his 1994 wristwatch, the Satellite du Monde.

Evidence for this section
  • “Reference No CKPT33B4”
  • “Case No PTSB05”
  • “Property from the Original Owner”
  • “In 1999, he created the present masterpiece CVDK Planetarium”

Dial Display and Case Architecture

Direct visual inspection shows a glittering dark aventurine glass dial with applied Roman numeral hour markers along the perimeter. Positioned at 6 o'clock is a concentric planetarium aperture displaying planetary orbits, while the 12 o'clock sector hosts a calendar subdial indicating the month and date below a multi-rayed sun emblem.

The round stainless steel case is catalogued at 40 mm in diameter. Visible case details include polished surfaces, straight screw-in lugs, and a fluted winding crown, fitted to a black leather strap with an alligator pattern (catalogued as crocodile).

Evidence for this section
  • “Glittering dark aventurine glass dial with applied Roman numerals”
  • “Concentric planetarium aperture positioned at 6 o'clock”
  • “Calendar subdial showing date and month indicators at 12 o'clock below a multi-ray sun emblem”
  • “Round polished stainless steel case with straight screw-in lugs and fluted crown”
  • “Dimensions 40mm diameter”
  • “Bracelet/Strap Crocodile”

Movement and Documented Accessories

The internal mechanism is not visible in the provided primary image. The catalogue records the movement as the automatic calibre CVDK7386 with 35 jewels, equipped with twin barrels providing a stated 96-hour power reserve, and featuring a hand-engraved rotor decorated with planets and the brand mark.

The catalogue indicates that the case, dial, movement, and deployant clasp are signed. Documented accompaniments include a manufacturer warranty stamped Christiaan van der Klaauw Netherlands and dated 20th April 2022, an instruction manual, a setting pin, an original purchase invoice, and a fitted presentation box with outer packaging.

Evidence for this section
  • “Calibre Automatic, CVDK7386, 35 jewels”
  • “Equipped with twin barrels, the self-winding calibre CVDK7386 provides a generous power reserve of 96 hours”
  • “A beautiful hand-engraved rotor with the brand mark and planets powers this mechanical marvel.”
  • “Signed Case, dial, movement and clasp signed”
  • “Accompanied by Christiaan van der Klaauw warranty stamped Christiaan van der Klaauw Netherlands dated 20th April 2022, instruction manual, setting pin, purchase invoice, fitted presentation box and outer packaging.”

Open research questions

  • What base movement architecture does calibre CVDK7386 utilize beneath the proprietary planetarium module?
  • What metals or materials are used for the individual planet spheres within the 6 o'clock planetarium display?

Source evidence

Recorded claims and source quotations for Christiaan van der Klaauw CVDK Planetarium ref. CKPT33B4
FieldSource-reported valueSource quotation
ReferenceCKPT33B4“Reference No CKPT33B4”
Case NumberPTSB05“Case No PTSB05”
CalibreCVDK7386“Calibre Automatic, CVDK7386, 35 jewels”
Dimensions40mm diameter“Dimensions 40mm diameter”
MaterialStainless steel“Material Stainless steel”
ClaspStainless steel Christiaan van der Klaauw deployant clasp“Clasp/Buckle Stainless steel Christiaan van der Klaauw deployant clasp”
Stated Power Reserve96 hours“provides a generous power reserve of 96 hours”
Warranty Date20th April 2022“dated 20th April 2022”

Visible details

  • Glittering dark aventurine glass dial with applied Roman numerals
  • Concentric planetarium aperture positioned at 6 o'clock
  • Calendar subdial showing date and month indicators at 12 o'clock below a multi-ray sun emblem
  • Round polished stainless steel case with straight screw-in lugs and fluted crown
  • Fitted with a black alligator-pattern leather strap

Research qualifications

  • Case back, movement, and deployant clasp are not visible in the provided photograph.

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Christiaan van der Klaauw The Hong Kong Watch Auction: XVII

Reviewed 2026-10-21 · Record cbcd37b982

Terms in this record

Glossary explanations for terms named in this object’s record.

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