Bahne Bonniksen "Non-Magnetic" 18K Gold Pocket Watch with Karrusel Regulator
Record status
Individual type · partial
Period
c. 1897
This 18K gold open-face pocket watch features a Bahne Bonniksen 52 1/2-minute karrusel regulator, dated by the auction house to circa 1897 and bearing serial number 62873 on movement and case.
The white enamel dial is inscribed "NON-MAGNETIC" and displays radial Roman numerals, an outer minute track, blued-steel spade hands, and a sunken subsidiary seconds register. The source reports a keyless three-quarter-plate 15-jewel movement with going barrel, pointed-tooth lateral lever escapement, cut bimetallic balance with gold timing screws, palladium balance spring, index regulation, and ruby endstone.
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
- Karrusel pocket watch
- Patent mark
- Stamped with Bahne Bonniksen patent mark on pillar plate
- Case material
- 18K gold
- Serial number
- 62873
- Maker / attribution
- Bahne Bonniksen
- Regulator mechanism
- 52 1/2-minute Karrusel
- Movement jewel count
- 15 jewels
Design
- Visible features
- • White enamel dial with black Roman numerals and an outer minute track. • Blued steel spade hour and minute hands with a matching blued subsidiary seconds hand. • Text reading 'NON-MAGNETIC' arched below the 12 o'clock position. • Top-winding fluted crown with a round suspension bow at 12 o'clock. • Sunken subsidiary seconds dial positioned at 6 o'clock.
- Dial and Visual Features
- The watch features a white enamel dial with radial Roman numerals and an outer minute track. An inscription reading "NON-MAGNETIC" is positioned in an arch below the 12 o'clock marker. The dial includes a sunken subsidiary seconds register at the 6 o'clock position and is equipped with blued-steel spade hands.
- Mechanical Configuration
- The internal mechanism is described as a 15-jewel, three-quarter-plate movement featuring a going barrel and a pointed-tooth lateral lever escapement. It is equipped with a Bahne Bonniksen 52 1/2-minute Karrusel regulator, which is reportedly stamped with a patent mark on the pillar plate. Additional balance components include a cut bimetallic balance with gold timing screws, a palladium balance spring with a terminal curve, index regulation, and a ruby endstone.
- Case and External Identification
- The timepiece is housed in an 18K gold case identified with the serial number 62873, which the source notes is marked on the case and the movement. The case is fitted with a fluted crown and a round suspension bow at the 12 o'clock position. The source provides conflicting diameter measurements of 55 mm and 54.2 mm. The total weight of the watch is stated as 85.7 dwt.
Identification
- Serial number
- 62873
- 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 and inner case back are not pictured; internal escapement, jewel count, and patent stamps rely solely on the auction house description.
- Research required: The auction listing provides conflicting dimensions of 'dia. 55 mm' and '54.2mm'.