Blondeau à Paris Gold Jump Hour Calendar Watch, No. 1098
Record status
Individual type · partial
Period
Circa 1820
This gold open-face jump hour calendar pocket watch by Blondeau à Paris is dated by Sotheby's to circa 1820. Measuring 52 mm in diameter, the watch features an engine-turned gold case with a matching band, pendant, and bow.
The silver guilloché dial displays jump hours in an aperture at 12 o'clock, complemented by an eccentric minute track with a blued steel hand. Three subsidiary dials provide running seconds, date of the month, and days of the week in French. According to the auction catalogue, the gilded movement features a cylinder escapement, plain gold three-arm balance, and standing barrel.
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
- Jump hour calendar pocket watch
- Balance
- Plain gold three-arm balance
- Escapement
- Cylinder escapement
- Case diameter
- 52 mm
- Place recorded
- France
- Cuvette inscription
- Blondeau, H ger B té du Roi, Rue de la Paix no. 19, à Paris, No. 1098
- Maker / attribution
- Blondeau à Paris
- Secondary case number
- 16346
Design
- Visible features
- • Silver guilloché dial with finely textured engine-turned ground and smooth chapter rings. • Aperture positioned directly below 12 o'clock displaying jumping Arabic numeral 10. • Eccentric central blued steel minute hand indicating against an Arabic numeral minute track calibrated to 60. • Three recessed subsidiary dials indicating continuous seconds at the top, date of the month at the lower left, and French days of the week at the lower right. • Gold case with an engine-turned reeded or patterned bezel and a spherical pendant with an oval bow.
- Case Construction and Inscriptions
- Constructed in gold with a catalog-stated diameter of 52 mm, the open-face case displays an engine-turned reeded or patterned bezel, a spherical pendant, and an oval bow. The auction text details the case as having an 'engine-turned back and band, gold pendant and bow', enclosing a polished gold cuvette. According to the source, the cuvette is 'signed and numbered Blondeau, H ger B té du Roi, Rue de la Paix no. 19, à Paris, No. 1098'. The catalog further notes an 'indistinct maker's mark' and reports that the inside case back and cuvette are 'further numbered 16346'.
- Movement Details and Source Boundaries
- The movement is not visible in the provided dial photograph and is recorded solely via the catalog description. The auction entry notes: 'Movement: gilded, cylinder escapement, plain gold three-arm balance, standing barrel'. The piece is cataloged by the auction house under the heading 'A GOLD JUMP HOUR CALENDAR WATCH CIRCA 1820, NO. 1098' and listed as 'Property from the Masterworks of Time Collection'. Because internal components, case back markings, and cuvette inscriptions are not depicted in the image, these details cannot be verified independently of the seller's documentation.
- Dial Configuration and Visual Indicators
- The watch presents a multi-register silver guilloché dial executing jump hour and calendar indications. Direct observation shows an engine-turned ground framed by smooth tracks, with an aperture positioned below 12 o'clock displaying jumping Arabic numeral 10. An eccentric central blued steel minute hand indicates against an Arabic numeral minute track calibrated to 60, while three recessed subsidiary dials indicate continuous seconds at the top, date of the month at the lower left, and French days of the week at the lower right. The auction catalog similarly documents the dial as featuring 'silver guilloché with contrasting engine-turned finishes, aperture for jump hours, eccentric silvered minute ring, three subsidiary dials for seconds, day and date, blued steel hands'.
Identification
- Serial number
- 1098
- 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: Movement details, cuvette signature, and internal numbering are reported in the auction description and cannot be verified from the single dial-side photograph.