De Witt Academia Perpetual Calendar Bi-Retrograde
Record status
Individual type · partial
Period
2007
This De Witt Academia Perpetual Calendar Bi-Retrograde, numbered 32/50, was produced in 2007 as part of a limited edition of 50 pieces. The 43 mm wristwatch is crafted in 18K pink gold, featuring a three-body case with a polished and frosted finish, a notched and stepped bezel, and a band decorated with imperial columns.
It is powered by the self-winding Caliber DW 10, which includes a 22K gold rotor and bears the Seal of Geneva quality mark. The guilloche silver dial displays printed Arabic numerals, bi-retrograde indications for the day at 9 o'clock and the date at 3 o'clock, a month and leap year subsidiary dial at 12 o'clock, and a moon phase aperture at 6 o'clock. The watch is accompanied by its original box and a matching 18K pink gold deployant clasp, with all primary elements signed by the maker.
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
- Perpetual calendar wristwatch
- Maker
- De Witt
- Dimensions
- 43 mm diameter
- Model Name
- Academia Perpetual Calendar Bi-Retrograde
- Case Material
- 18K pink gold
- Serial Number
- 32/50
- Place recorded
- Switzerland
- Production Year
- 2007
- Movement Caliber
- DW 10
- Movement Features
- Seal of Geneva quality mark
- Maker / attribution
- De Witt
Design
- Visible features
- • Notched and stepped bezel design • Imperial column motifs on case band • Bi-retrograde indicators for day and date • Transparent case back secured with six nuts
- Case and Dial Construction
- The watch features a three-body 18K pink gold case, measuring 43 mm in diameter and 14 mm in thickness. The exterior is characterized by a combination of polished and frosted finishes, complemented by a distinctive notched and stepped bezel. The case band incorporates a design detail referred to as imperial columns, and the construction is completed by straight lugs and a transparent case back secured by six nuts. The guilloche silver dial presents a technical layout with printed Arabic numerals set against a plain reserve. Time and calendar information are arranged through specific displays: retrograde sectors at 9 and 3 o'clock indicate the day of the week and the date, respectively. A subsidiary dial at the 12 o'clock position tracks the months and leap year, while an aperture at the 6 o'clock position shows the phases of the moon.
- Condition and Accompaniments
- The auction description reports the object's condition using a specific grading scale, assigning an overall grade of AAA. The dial is classified as 'As new' (1-01), while the movement is also classified as 'As new' (1). The case is given a grade of 3, described as 'Good'. The hands are noted as original to the watch. The wristwatch is presented with a De Witt 18K pink gold deployant clasp and is provided with the original box. The dial, case, and movement are signed by De Witt.
- Movement and Technical Specifications
- The timepiece is equipped with the self-winding Caliber DW 10, which functions with 30 jewels. The movement features a 22K gold rotor and is decorated with fausses cotes. Technical components include a straight-line lever escapement, a monometallic balance, a shock absorber, a self-compensating flat balance spring, and a micrometer regulator. The movement is certified with the Seal of Geneva quality mark. As a perpetual calendar, the movement manages the complexities of the Gregorian calendar automatically, including leap years. The presence of the Seal of Geneva indicates that the movement meets specific regulatory standards for finishing and construction as defined by the Geneva quality control authorities.
Identification
- Serial number
- 32/50
- 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 source attributes manufacture to Geneva but does not explicitly state the country as Switzerland, though Genève is implied.
- Research required: The condition grading uses a system where 'Case: 3' is noted, which the source identifies as 'Good'.