ETA 28800 A/h family block
authority: ranfft7 members
Family line
ETA 2824
Manufacturer-internal (Ranfft sense)3 calibers2 lineage edges4 related edges2 disputeddesign:eta-2824compare specs · 3
This profile traverses revision_of · variant_of and drops disputed edges. Every edge in this view carries at least one reference.
Same caliber, other senses of “family”Everything (debug) · 28 calibersHeritage · 28 calibersParts cluster (Jules Borel sense) · 1 calibersBased-on star (WatchBase sense) · 28 calibers
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
| Caliber | Relationship | To | Status | Detail | Sources |
|---|---|---|---|---|---|
| ETA 2824-2 | revision of lineage | ETA 2824 | accepted | interchange note: different spares: mainspring 1.20x11.0x0.115 mm -> 1.25x11.0x0.125 mm; stem W3408 -> W3738 · component delta: mainspring,keyless_works | |
| ETA 2836-2 | variant of lineage | ETA 2824-2 | accepted | component delta: calendar_mechanism | |
| design:eta-2804-2 | no derivation between related | ETA 2824-2 | disputed | — | |
| design:hkpt-pt5000 | drop-in for related | ETA 2824-2 | disputed | hand sizes 1.50/0.90/0.25 mm stated identical to the ETA 2824-2 | |
| design:kenissi-mt5602 | successor of related | ETA 2824-2 | accepted | THE 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. | |
| design:ronda-r150 | different from related | ETA 2824-2 | accepted | Ronda's own positioning: not a copy, but the same casing dimensions. This is a RELATED edge and can never enter an ancestry path. |
Curated overlays
A curated family label is an attributed opinion about grouping, not a node in the graph. No edge can point at one, and membership never affects ancestry.
Calibers based on the ETA 2824-2 (WatchBase)
authority: watchbase5 members
Sources
- 1Internet Archivehttps://web.archive.org/web/2021/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2824archivetier 2retrieved 2026-08-242 facts on this page
- 2Internet Archivehttps://web.archive.org/web/2021/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2824_2archivetier 2retrieved 2026-08-243 facts on this page
- 3Caliber Cornerhttps://calibercorner.com/eta-caliber-2836-2/curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
- 4Internet Archivehttps://web.archive.org/web/2023/https://watchbase.com/eta/caliber/2824-2archivetier 3retrieved 2026-08-242 facts on this page
- 5Caliber Cornerhttps://calibercorner.com/hk-precision-technology-caliber-pt5000/curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
- 6Monochrome Watcheshttps://monochrome-watches.com/history-tudor-black-bay-collection-2012-2024-including-all-models-all-movement-bb58-bb54-gmt-in-depth-recap/presstier 2retrieved 2026-08-241 fact on this page
- 7Caliber Cornerhttps://calibercorner.com/ronda-caliber-r150/curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled