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:lemania-2310/unknown
accepteddisputed
movement
Lemania 2310
bounding evidence — no range is drawn on the era axis
not after 1968
Lemania 1873 · introduced 1968 (sourced)
not after 1977
Lemania 1873 · bounded to 1977 (a sourced bound)
not after 1986
Patek Philippe CH 27-70 Q · introduced 1986 (sourced)
not after 2019
Omega 321 (2019 reconstruction) · introduced 2019 (sourced)
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
Lemania 2310
movementproducer: Lemania Watch Co.
IIDesignations — 3 names
| Issuer | Name | Kind | Disambiguated by | Sources |
|---|---|---|---|---|
| Lemania Watch Co. | 2310 | catalog | — | |
| Omega | 321 | house | movement production period. A 321 made between 1957 and 1968 is the Lemania 2310-based original; a 321 made from 2019 is the Bienne reconstruction, whose only stated departure from the original is cleaner, more detailed finishing and engraving. | |
| Patek Philippe | 2872 | house | — |
IIIExecutions — 1 article
No source in this corpus states which grade any Lemania 2310 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 |
|---|---|---|---|---|
Chronograph actuation cmpl.chrono_actuation | column_wheel | — | accepted | |
Chronograph clutch cmpl.chrono_clutch | horizontal_lateral | — | accepted | |
Chronograph cmpl.has_chronograph | yes | — | accepted | |
Movement diameter geom.diameter_mm | 27 mm | — | accepted | |
Balance type osc.balance_type | screwed | — | accepted | |
Frequency osc.frequency_vph | 18000 vph | — | accepted | |
Discontinued prod.discontinued_year | 1968 | — | accepted | |
Introduced prod.intro_year | 1942 | — | 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 · 0
Where this construction came from. Read up the arrows.
None recorded. An absence here means no source stated one, not that none exists.
Descendants · 7
What came from it — revisions, variants, clones, licensed copies.
- Lemania 1873derived from
- Omega 321 (2019 reconstruction)derived from
- Patek Philippe CH 27-70 Qderived from
- Omega 1861revision ofderived fromdepth 2
- Omega 861 (Lemania 1873)ébauche ofderived fromdepth 2
- Omega 862 (Lemania 1873)ébauche ofderived fromdepth 2
- Omega 3861derived fromrevision ofdepth 3
Related · 1
Stored in a different table from descent. A successor is not a child.
- Patek Philippe CH 29-535 PSno derivation between
The sources describe a clean-sheet in-house caliber, not a reworking of the Lemania ébauche that preceded it in the same collection.
Sources
- 1Watch-Wikihttps://www.watch-wiki.net/doku.php?id=lemaniawikitier 3retrieved 2026-08-244 facts on this pagecited, never crawled
- 2Monochrome Watcheshttps://monochrome-watches.com/in-depth-the-omega-flightmaster-the-special-one/presstier 2retrieved 2026-08-248 facts on this page
- 3Monochrome Watcheshttps://monochrome-watches.com/omega-reintroduces-the-iconic-calibre-321-chronograph-column-wheel-2019/presstier 2retrieved 2026-08-245 facts on this page
- 4Monochrome Watcheshttps://monochrome-watches.com/history-of-the-patek-philippe-perpetual-calendar-chronograph-1518-2499-3970-5020-5970-5270-in-depth-guide/presstier 2retrieved 2026-08-254 facts on this page
- 5Monochrome Watcheshttps://monochrome-watches.com/the-battle-of-high-end-chronographs-part-1-patek-philippe-5172g/presstier 2retrieved 2026-08-241 fact on this page
- 6Internet Archivehttps://web.archive.org/web/20220705034337/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Lemania_1873&archivetier 2retrieved 2022-07-051 fact on this page
- 7omegawatches.comhttps://www.omegawatches.com/en-us/chronicle/2021-the-moonwatch-becomes-a-master-chronometermanufacturertier 1retrieved 2026-08-241 fact on this page
- 8Monochrome Watcheshttps://monochrome-watches.com/omega-co-axial-escapement-technical-perspective/presstier 2retrieved 2026-08-241 fact on this page
- 9Internet Archivehttps://web.archive.org/web/20230901194459/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Omega_861archivetier 2retrieved 2023-09-011 fact on this page
- 10Internet Archivehttps://web.archive.org/web/20230901194604/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Omega_862archivetier 2retrieved 2023-09-011 fact on this page