unknown
evidence: unknowndecoration Fine sunbeam ribbing radiating from the balance out to the date ring, tempered blue screws, Glashütte three-quarter plate
exec:nomos-duw-4601/nomos
accepteddisputed
movement
NOMOS DUW 4601
bounding evidence — no range is drawn on the era axis
not before 1971
Peseux / ETA 7001 · introduced 1971 (sourced)
not before 2005
NOMOS Alpha · introduced 2005 (sourced)
Identity
A caliber is three separate things and this reference keeps them apart: the construction, the names it is sold under, and the article a brand actually bought. A watch model points at an execution — never at a bare construction — which is why “same caliber” is almost never a complete answer.
IDesign — the construction
NOMOS DUW 4601
movementproducer: NOMOS Glashütte
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 2 articles
No source in this corpus states which grade any NOMOS DUW 4601 was bought at. That unknown is stored as a real row rather than left blank, so it can be counted, filtered and excluded from any comparison that would otherwise assume parity.
unknownsynthetic
evidence: unknown
no source states which grade this article was bought at — this row exists so 'unknown' stays countable instead of becoming an assumption
exec:nomos-duw-4601/unknown
Specifications
| Property | Value | Scope | Status | Sources |
|---|---|---|---|---|
Jewels build.jewel_count | 23 | — | accepted | |
Date disp.has_date | yes | — | accepted | |
Escapement brand name esc.brand_name | NOMOS Swing System | — | accepted | |
Movement diameter geom.diameter_mm | 34.6 mm | — | disputed | |
Movement diameter geom.diameter_mm | 35.9 mm | — | disputed | |
Movement height geom.height_mm | 2.8 mm | — | accepted | |
Swiss movement origin.swiss_movement | no | — | accepted | |
Frequency osc.frequency_vph | 21600 vph | — | accepted | |
Hairspring supplier osc.hairspring_supplier | agent:nomos-glashutte | — | accepted | |
Power reserve (typical) power.reserve_typical_h | 52 h | — | accepted | |
Introduced prod.intro_year | 2024 | — | accepted | |
Caliber supply type prod.supply_type | in_house | — | accepted | |
Hacking seconds wind.has_hacking_seconds | yes | — | accepted | |
Quickset date wind.has_quickset_date | yes | — | accepted | |
Winding mode wind.mode | manual | — | accepted |
Where a property carries more than one value, the values have different scopes — an official spec sheet and observed hardware, say. Different scopes are not a disagreement, so both are accepted and both are shown with the scope they apply to.
Lineage
The same relationships as the tree at the top of this page, with their sources. An absence in a column means no source stated one.
Ancestors · 2
Where this construction came from. Read up the arrows.
- NOMOS Alphaderived from
- Peseux / ETA 7001derived fromdepth 2
Descendants · 0
What came from it — revisions, variants, clones, licensed copies.
None recorded. An absence here means no source stated one, not that none exists.
Related · 0
Stored in a different table from descent. A successor is not a child.
None recorded. An absence here means no source stated one, not that none exists.
Used by
1
models
1
brands
1
grade unknown
grain 1 model — every record here sits at the same level, so the count is one kind of thing.
- NOMOS Glashütte1 modelmodel:nomos-glashutte/metro-38-date
Every brand here is on the strength of a source that names a watch and states this movement. Brands that use this caliber and nobody has sourced yet are absent — this is what has been researched, not what exists.
Sources
- 1Monochrome Watcheshttps://monochrome-watches.com/nomos-tangente-2date-new-hand-wound-calibre-duw-4601-in-house-movement-review-specs-price/presstier 2retrieved 2026-08-2410 facts on this page
- 2Monochrome Watcheshttps://monochrome-watches.com/nomos-metro-38-date-duw-4601-hand-wound-price-review/presstier 2retrieved 2026-08-249 facts on this page
- 3Monochrome Watcheshttps://monochrome-watches.com/interview-uwe-ahrendt-nomos-glashutte-tangente-orion-ludwig-tetra-club-manufacture/presstier 2retrieved 2026-08-242 facts on this page
- 4Monochrome Watcheshttps://monochrome-watches.com/in-depth-history-eta-peseux-7001-hand-wound-classic-movement-technical-review/presstier 2retrieved 2026-08-241 fact on this page
- 5Monochrome Watcheshttps://monochrome-watches.com/revisiting-the-most-classic-nomos-the-35mm-hand-wound-tangente-review-price/presstier 2retrieved 2026-08-242 facts on this page
- 6Monochrome Watcheshttps://monochrome-watches.com/first-look-nomos-tetra-origins-ochra-terra-salvia-basalt-duw-4001-specs-price-live-pics/presstier 2retrieved 2026-08-242 facts on this page
- 7Internet Archivehttps://web.archive.org/web/20191021024412/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_3807archivetier 2retrieved 2019-10-211 fact on this page
- 8Internet Archivehttps://web.archive.org/web/20220704151229/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Girard-Perregaux_101archivetier 2retrieved 2022-07-041 fact on this page