At a glance
- Period
- 20th–21st century
- Dates
- 1955–? 1
The watchmaking story
Useful places to start with Rainer Nienaber's work include Retrograde 'The Unique' and Digimat. 2
Recognition: AHCI former member; profile records 1993 1
Scope: Direct watchmaking
Why this person is included
Professional recognition and documented craft
Background and working context
Affiliations and workshops: Nienaber Bünde 2
Documented origin: Germany
Geographic ties: Germany. Documented workplace / industry location
Brands, workshops, and other relationships
- Watch brand / watchmaking business · Inherited source-linked record; relationship classification reviewed, sources not reopened
Nienaber Bünde — Own watchmaking practice. Watchmaker / clockmaker 123
Legacy affiliation: Nienaber Bünde. Person-level contribution: Created independent wristwatches using jumping and retrograde displays after work on regulator clocks and repairs.
Original affiliation wording: Nienaber Bünde. No present-day employment or ownership inferred.
Evidence and limitations
This dossier connects 7 field-specific evidence records with 3 public sources. Known links only; full career not established
Claim qualifications (7)
- Noteworthy contribution: Retrograde model used a modified A. Schild 1130 base; not an entirely in-house base movement. Current trading or service availability is not established. 2
- Representative work: Retrograde model used a modified A. Schild 1130 base; not an entirely in-house base movement. Current trading or service availability is not established. 2
- Affiliations / workshops: Retrograde model used a modified A. Schild 1130 base; not an entirely in-house base movement. Current trading or service availability is not established. 2
- Specific role: Retrograde model used a modified A. Schild 1130 base; not an entirely in-house base movement. Current trading or service availability is not established. 2
- Birth year: Membership page does not establish current trading status. Post-consolidation gap-resolution pass: historical value snapshot differs from the current People value; retain as audit history. 1
- Recognition: Membership page does not establish current trading status. 1
- Primary geography: Membership page does not establish current trading status. 1
Sources
- Rainer Nienaber – AHCIAcadémie Horlogère des Créateurs Indépendants (AHCI) · Institutional / association · Not stated
[S0124] Académie Horlogère des Créateurs Indépendants (AHCI). "Rainer Nienaber – AHCI." Not stated. https://www.ahci.ch/members/rainer-nienaber/ Accessed 2026-09-13.
Source context
Relationship to subject: Associated professional body
How it was checked: Page opened; relevant text read
Limitation: Association profile; undated text can contain legacy role or production claims. Only the recorded biographical facts are used.
- Nienaber Bünde RetrogradeRobert-Jan Broer · Fratello · Specialist reporting · 2008-11-03
[S0202] Robert-Jan Broer. Fratello. "Nienaber Bünde Retrograde." 2008-11-03. https://www.fratellowatches.com/nienaber-bunde-retrograde/ Accessed 2026-09-13.
Source context
Relationship to subject: Independent publication; preview based on product material
How it was checked: Page opened; relevant text read
Limitation: Preview, not a hands-on test. Historical specifications support model identification; output, price and current operations are not carried forward.
- https://www.ahci.ch/members/rainer-nienaber/ https://www.fratellowatches.com/nienaber-bunde-retrograde/linked source
Corrections and stronger evidence
Names, dates, and workshop relationships can change as archives are digitised. If you have a primary source that clarifies this record, use the correction process.
Submit supporting evidence