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:mb-f-lm-split-escapement/unknown
accepteddisputed
movement
MB&F Legacy Machine Split Escapement
MB&F (Max Büsser & Friends)Stephen McDonnell⟨2015 or later⟩ range onlydesign:mb-f-lm-split-escapementcompare specs · 2
⟨2015 or later⟩ range only — no source gives an introduction yearderived from dated relatives · accepted
not before 2015
MB&F Legacy Machine Perpetual · introduced 2015 (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
MB&F Legacy Machine Split Escapement
movementcommissioned_by: MB&F (Max Büsser & Friends)designer: Stephen McDonnell
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any MB&F Legacy Machine Split Escapement 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 |
|---|---|---|---|---|
Calendar class cmpl.calendar_class | simple_date | — | accepted | |
Date disp.has_date | yes | — | accepted | |
Power-reserve indicator disp.has_power_reserve_indicator | yes | — | 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.
- MB&F Legacy Machine Perpetualderived from
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/retrospective-all-mbandf-legacy-machine-since-2011-teaser-lmx/presstier 2retrieved 2026-08-247 facts on this page