Movement record · Germany (Schramberg)
Junghans calibre J83
Needs researchA German wristwatch calibre family made in grades from ordinary commercial work up to versions submitted for chronometer certification.
Technical specifications
- Diameter
- Not recorded in a source consulted here
- Height
- Not recorded in a source consulted here
- Jewels
- Made in several jewel counts, including chronometer-grade versions
- Frequency
- 18,000 vibrations per hour on standard versions
- Power reserve
- Approximately one day
- Winding
- Manual winding
- Setting
- Crown setting
- Escapement
- Swiss lever
- Balance
- Jewelled, with Breguet overcoil on the highest grades
- Complications
- Sub-seconds or centre seconds depending on version
Identification features
- Signed Junghans with the calibre number
- Chronometer versions carry additional markings and finishing
Known variants
- Standard and chronometer-grade versions
Servicing notes
Parts circulate on the second-hand market; chronometer-grade balances should be adjusted only by a professional.
General guidance only. Antique movements should be serviced by a qualified watchmaker.
Historical significance
The calibre through which a large German factory demonstrated it could meet chronometer standards in series production.
Related photographs
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No confidently matched photograph of this subject has been found yet. These photographs show a closely related record, and are not examples of the type described on this page.
Sources & references
- Junghans company history and collector references
- Full technical specifications for individual J83 variants were not confirmed in the sources consulted here.
Where sources disagree, the disagreement is stated rather than resolved silently.