CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.

Family line

Kenissi / Tudor MT5400

Based-on star (WatchBase sense)4 calibers4 lineage edges1 related edges2 disputeddesign:kenissi-mt5400compare specs · 4

This profile traverses clone_of · derived_from · ebauche_of · revision_of · variant_of and keeps disputed edges. Every edge in this view carries at least one reference.

Same caliber, other senses of “family”Everything (debug) · 4 calibersHeritage · 4 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 1 calibers
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CONTESTED · 2 POSITIONSvariant ofderived fromvariant of ?variant of ?Kenissi / Tudor MT5400 — open caliber pageKenissi / Tudor MT5400—Kenissi Manufacture …2 exec · grade ?Kenissi / Tudor MT5402 — open caliber pageKenissi / Tudor MT54022018Kenissi Manufacture …1 exec · grade ?Kenissi / Tudor MT5602 — open caliber pageKenissi / Tudor MT56022016Kenissi Manufacture …2 exec · grade ?Norqain NN20/1 — open caliber pageNorqain NN20/1—Kenissi Manufacture …1 exec · grade ?
Edge types in this family
accepteddisputedcontested region

Generations run left to right, ancestors first, and the axis along the top is ordinal rather than linear: each band is one generation, labelled with the range of sourced introduction years it contains. A band reads “—” when no caliber in it has a year anyone published — the gap is the finding, not a rendering failure. Dotted arcs above and below the drawing are related edges — successor, drop-in, no-derivation — which are stored in a different table from lineage and can never form part of an ancestry path.

Every edge in this view

CaliberRelationshipToStatusDetailSources
Kenissi / Tudor MT5402variant of
lineage
Kenissi / Tudor MT5602acceptedinterchange note: Published delta: "a smaller version of the 41mm Black Bay calibre MT5602", 4.99 mm thick against 6.5 mm, which let the Black Bay Fifty-Eight case go to 11.9 mm from 13.6 mm. Same silicon hairspring, same 70-hour reserve, same COSC certification. · component delta: dimensions
Kenissi / Tudor MT5400derived from
lineage
Kenissi / Tudor MT5402acceptedinterchange note: Stated delta: slightly larger than the MT5402, reworked for exhibition-caseback appearance; no component list published.
Norqain NN20/1variant of
lineage
Kenissi / Tudor MT5402disputed—
Norqain NN20/1variant of
lineage
Kenissi / Tudor MT5602disputed—
Kenissi / Tudor MT5602successor of
related
design:eta-2824-2acceptedTHE ÉBAUCHE-TO-MANUFACTURE SWITCH, encoded as what it is: a commercial succession inside one brand's product, NOT a derivation. Tudor replaced the bought ETA 2824 in the Black Bay with the Kenissi-built MT5602, keeping the same 28,800 vph and nearly doubling the reserve (38 h -> 70 h). The row lives in the related table, so browsing the MT5602's ancestry will never walk into ETA.

Sources

  1. 1
    Monochrome Watches
    https://monochrome-watches.com/history-tudor-black-bay-collection-2012-2024-including-all-models-all-movement-bb58-bb54-gmt-in-depth-recap/
    presstier 2retrieved 2026-08-243 facts on this page
  2. 2
    Caliber Corner
    https://calibercorner.com/norqain-caliber-nn20-1/
    curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
  3. 3
    WatchBase
    https://watchbase.com/norqain/caliber/nn20-1
    archivetier 3retrieved 2026-08-241 fact on this pagecited, never crawled