CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeAudemars Piguet 2120 — Heritage family: 11 calibers, 10 sourced lineage links.Drag to explore.
100%drag to pan · hover a caliber to isolate its line · scroll the page normallyopen the full family view →
module onébauche ofderived fromderived fromébauche ofderived fromébauche ofvariant ofvariant ofderived fromAudemars Piguet 2120 — the caliber this page is aboutAudemars Piguet 21201967Audemars Piguet Holding SA1 exec · grade ?Audemars Piguet 2120/2800 — open caliber pageAudemars Piguet 2120/28001978Audemars Piguet Holding SA1 exec · grade ?Audemars Piguet 2121 — open caliber pageAudemars Piguet 21211970Audemars Piguet Holding SA1 exec · grade ?Audemars Piguet 5133 — open caliber pageAudemars Piguet 51332018Audemars Piguet Holding SA1 exec · grade ?Jaeger-LeCoultre 920 — open caliber pageJaeger-LeCoultre 9201967Manufacture Jaeger…ebauche · 1 exec · grade ?Patek Philippe 28-255 C — open caliber pagePatek Philippe 28-255 C1976Manufacture Jaeger-LeCoultre…1 exec · grade ?Vacheron Constantin 1120 — open caliber pageVacheron Constantin 1120—Vacheron Constant…2 exec · grade ?Vacheron Constantin 1120 QP — open caliber pageVacheron Constantin 1120 …1983Vacheron Constantin2 exec · grade ?Vacheron Constantin 1121 — open caliber pageVacheron Constantin 11…1977Vacheron Constantin1 exec · grade ?Vacheron Constantin 1122 — open caliber pageVacheron Constantin 1122—Vacheron Constant…1 exec · grade ?Vacheron Constantin 1222 — open caliber pageVacheron Constantin 12…2006Vacheron Constantin1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 11Everything (debug) · 11Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 10Open the full family view →

movement

Audemars Piguet 2120

Audemars Piguet Holding SA · 2002–presentManufacture Jaeger-LeCoultre SA · ?–2002introduced 1967design:ap-2120compare specs · 5
bounding evidence — no range is drawn on the era axis
not after 1970
Audemars Piguet 2121 · introduced 1970 (sourced)you cannot derive from what does not exist · → derived from · rule IR-2 · depth 1 · acceptedthe anchor's own source
not after 1978
Audemars Piguet 2120/2800 · introduced 1978 (sourced)a composite cannot predate its base · → module on · rule IR-7 · depth 1 · acceptedthe anchor's own source
not after 2018
Audemars Piguet 5133 · introduced 2018 (sourced)you cannot derive from what does not exist · → derived from · rule IR-2 · depth 1 · acceptedthe anchor's own source

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
Audemars Piguet 2120
movementproducer: Audemars Piguet Holding SAproducer: Manufacture Jaeger-LeCoultre SA
IIDesignations — 1 name
IssuerNameKindDisambiguated bySources
Audemars Piguet Holding SA2120housethe no-date execution of the LeCoultre 920 ébauche under AP's house numbering
IIIExecutions — 1 article

No source in this corpus states which grade any Audemars Piguet 2120 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:ap-2120/unknown

Specifications

PropertyValueScopeStatusSources
Date
disp.has_date
no—accepted
Seconds display
disp.seconds_display
none—accepted
Movement height
geom.height_mm
2.45 mm—accepted
Frequency
osc.frequency_vph
19800 vph—accepted
Shock protection
osc.shock_protection
kif—accepted
Introduced
prod.intro_year
1967—accepted
Winding direction
wind.direction
bidirectional—accepted
Winding mode
wind.mode
automatic—accepted
Rotor bearing
wind.rotor_bearing
jewel_bearing—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.

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

  1. 1
    Monochrome Watches
    https://monochrome-watches.com/complete-history-of-the-audemars-piguet-royal-oak-jumbo-series-5402-14802-15002-15202-16202-review/
    presstier 2retrieved 2026-08-2413 facts on this page
  2. 2
    Monochrome Watches
    https://monochrome-watches.com/audemars-piguet-royal-oak-jumbo-extra-thin-16202st-to-replace-the-15202st-video-review-price/
    presstier 2retrieved 2026-08-244 facts on this page
  3. 3
    Monochrome Watches
    https://monochrome-watches.com/history-of-the-audemars-piguet-royal-oak-perpetual-calendar-in-depth-review/
    presstier 2retrieved 2026-08-243 facts on this page
  4. 4
    audemarspiguet.com
    https://www.audemarspiguet.com/en/about/savoir-faire/forward-thinking-spirit/the-rd--saga
    manufacturertier 1retrieved 2026-08-241 fact on this page
  5. 5
    Monochrome Watches
    https://monochrome-watches.com/history-patek-philippe-nautilus-part-1-nautilus-3700/
    presstier 2retrieved 2026-08-241 fact on this page
  6. 6
    Monochrome Watches
    https://monochrome-watches.com/vacheron-constantin-overseas-ultra-thin-2000v-calibre-1120-sihh2016/
    presstier 2retrieved 2026-08-244 facts on this page
  7. 7
    Monochrome Watches
    https://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
  8. 8
    Monochrome Watches
    https://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
  9. 9
    Monochrome Watches
    https://monochrome-watches.com/history-vacheron-constantin-overseas-1970s-icon/
    presstier 2retrieved 2026-08-242 facts on this page