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

Family line

ETA 2892-A2

Based-on star (WatchBase sense)9 calibers8 lineage edges4 related edgesdesign:eta-2892-a2compare specs · 9

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) · 25 calibersHeritage · 20 calibersHeritage · 12 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 7 calibersManufacturer-internal (Ranfft sense) · 1 calibers
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derived fromderived fromderived fromderived fromderived fromclone ofclone ofderived fromETA 2892-A2 — open caliber pageETA 2892-A2—ETA SA Manufacture Horlogère…1 exec · grade ?ETA 2893-2 — open caliber pageETA 2893-2—ETA SA Manufacture Horlogère…1 exec · grade ?ETA 2897 — open caliber pageETA 2897—ETA SA Manufacture Horlogère…1 exec · grade ?ETA A31.L11 — open caliber pageETA A31.L11—ETA SA Manufacture Horlogère…1 exec · grade ?Omega 1120 — open caliber pageOmega 1120—maker not sourc…1 exec · grade ?Omega 2500 — open caliber pageOmega 25001999Omega1 exec · grade ?Sea-Gull ST18 — open caliber pageSea-Gull ST18—Tianjin Sea-Gull Watch Group1 exec · grade ?Sellita SW300-1 — open caliber pageSellita SW300-1—Sellita Watch Co S.A.4 execSellita SW330-2 — open caliber pageSellita SW330-2—Sellita Watch Co S.A.2 exec
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
ETA 2893-2derived from
lineage
ETA 2892-A2accepted—
ETA 2897derived from
lineage
ETA 2892-A2acceptedcomponent delta: complication_module
ETA A31.L11derived from
lineage
ETA 2892-A2acceptedinterchange note: slowed from 28,800 to 25,200 vph to reach a 72 h reserve · component delta: barrel,gear_train,frequency
Omega 1120derived from
lineage
ETA 2892-A2accepted—
Omega 2500derived from
lineage
Omega 1120acceptedinterchange note: co-axial escapement graft onto a branded/adapted ETA-derived base · component delta: escapement_architecture
Sea-Gull ST18clone of
lineage
ETA 2892-A2acceptedtrue clone
Sellita SW300-1clone of
lineage
ETA 2892-A2acceptedtrue clone
Sellita SW330-2derived from
lineage
ETA 2892-A2accepted—
design:omega-8500successor of
related
Omega 2500unverifiedsucceeds the 2500 in the lineup; the source explicitly denies derivation
design:omega-8500no derivation between
related
ETA 2892-A2unverified—
design:roger-w-smith-series-2different from
related
Omega 2500acceptedBoth movements carry a Daniels co-axial escapement and they are not the same escapement: Smith's site says Omega used Daniels's slim-line version and only later moved to the original two-wheel-with-pinion form that the Series 2 was designed around.
design:soprod-m100drop-in for
related
ETA 2892-A2acceptedsame dimensions and dial-feet location; the source explicitly says it is not an exact clone

Sources

  1. 1
    Caliber Corner
    https://calibercorner.com/eta-caliber-2893-2/
    curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
  2. 2
    Caliber Corner
    https://calibercorner.com/eta-caliber-2897/
    curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
  3. 3
    Caliber Corner
    https://calibercorner.com/eta-caliber-a31-l11/
    curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
  4. 4
    Watch-Wiki
    https://www.watch-wiki.net/index.php?title=Omega_2500
    wikitier 3retrieved 2026-08-242 facts on this pagecited, never crawled
  5. 5
    chinesewatchwiki.net
    https://chinesewatchwiki.net/Clone_movements
    wikitier 3retrieved 2026-08-241 fact on this page
  6. 6
    chinesewatchwiki.net
    https://chinesewatchwiki.net/Tianjin_Seagull
    wikitier 3retrieved 2026-08-241 fact on this page
  7. 7
    Monochrome Watches
    https://monochrome-watches.com/inside-sellita-the-giant-supplier-of-mechanical-movements-behind-the-scenes-watch-industry/
    presstier 2retrieved 2026-08-241 fact on this page
  8. 8
    Wikipedia
    https://en.wikipedia.org/wiki/Sellita
    wikitier 3retrieved 2026-08-241 fact on this page
  9. 9
    Caliber Corner
    https://calibercorner.com/sellita-caliber-sw330-2/
    curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
  10. 10
    teddybaldassarre.com
    https://teddybaldassarre.com/blogs/watches/co-axial-movement
    presstier 3retrieved 2026-08-241 fact on this page
  11. 11
    swatchgroup.com
    https://www.swatchgroup.com/en/services/archive/2010/omegas-co-axial-story
    presstier 3retrieved 2026-08-242 facts on this page
  12. 12
    rwsmithwatches.com
    https://rwsmithwatches.com/evolution
    manufacturertier 1retrieved 2026-08-241 fact on this page
  13. 13
    Caliber Corner
    https://calibercorner.com/soprod-caliber-m100/
    curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled