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:patek-philippe-28-255-c/unknown
accepteddisputed
movement
Patek Philippe 28-255 C
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
Patek Philippe 28-255 C
movementproducer: Manufacture Jaeger-LeCoultre SA
IIDesignations — 1 name
| Issuer | Name | Kind | Disambiguated by | Sources |
|---|---|---|---|---|
| Patek Philippe | 28-255 | house | — |
IIIExecutions — 1 article
No source in this corpus states which grade any Patek Philippe 28-255 C 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.
Specifications
| Property | Value | Scope | Status | Sources |
|---|---|---|---|---|
Jewels build.jewel_count | 36 | — | accepted | |
Date disp.has_date | yes | — | accepted | |
Movement diameter geom.diameter_mm | 28 mm | — | accepted | |
Movement height geom.height_mm | 3.05 mm | — | accepted | |
Balance type osc.balance_type | weighted | — | accepted | |
Frequency osc.frequency_vph | 19800 vph | — | accepted | |
Power reserve (typical) power.reserve_typical_h | 40 h | — | accepted | |
Introduced prod.intro_year | 1976 | — | accepted | |
Winding mode wind.mode | automatic | — | accepted | |
Rotor architecture wind.rotor_architecture | central | — | accepted |
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 · 1
Where this construction came from. Read up the arrows.
- Jaeger-LeCoultre 920ébauche of
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.
Sources
- 1Monochrome Watcheshttps://monochrome-watches.com/history-patek-philippe-nautilus-part-1-nautilus-3700/presstier 2retrieved 2026-08-2412 facts on this page
- 2Monochrome Watcheshttps://monochrome-watches.com/complete-history-of-the-audemars-piguet-royal-oak-jumbo-series-5402-14802-15002-15202-16202-review/presstier 2retrieved 2026-08-245 facts on this page
- 3Monochrome Watcheshttps://monochrome-watches.com/vacheron-constantin-overseas-ultra-thin-2000v-calibre-1120-sihh2016/presstier 2retrieved 2026-08-245 facts on this page
- 4Monochrome Watcheshttps://monochrome-watches.com/history-of-the-audemars-piguet-royal-oak-perpetual-calendar-in-depth-review/presstier 2retrieved 2026-08-242 facts on this page
- 5Monochrome Watcheshttps://monochrome-watches.com/audemars-piguet-royal-oak-jumbo-extra-thin-16202st-to-replace-the-15202st-video-review-price/presstier 2retrieved 2026-08-241 fact on this page
- 6Monochrome Watcheshttps://monochrome-watches.com/2025-vacheron-constantin-traditionnelle-perpetual-calendar-ultra-thin-36mm-non-gemset-editions-review-price/presstier 2retrieved 2026-08-242 facts on this page
- 7Monochrome Watcheshttps://monochrome-watches.com/2025-vacheron-constantin-222-steel-review-historiques-222-blue-dial-steel-luxury-sports-watch-price/presstier 2retrieved 2026-08-241 fact on this page
- 8Monochrome Watcheshttps://monochrome-watches.com/history-vacheron-constantin-overseas-1970s-icon/presstier 2retrieved 2026-08-242 facts on this page