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:miyota-5r21/unknown
Family tree · none recorded
No lineage link to any other caliber is recorded for this design under the Heritage profile. That is a gap in the research, not a claim that none exists.
movement
Miyota 5R21
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
Miyota 5R21
movementproducer: Miyota
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any Miyota 5R21 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 | 0 | — | accepted | |
Movement diameter geom.diameter_mm | 13.2 mm | — | accepted | |
Movement height geom.height_mm | 1.9 mm | — | accepted | |
Product family prod.family_name | Small | — | accepted | |
Production status prod.status | discontinued | — | accepted | |
Hacking seconds wind.has_hacking_seconds | 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 · 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 · 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
- 1Miyota (Citizen)https://miyotamovement.com/discontinued-products/manufacturertier 1retrieved 2026-08-282 facts on this page
- 2Caliber Cornerhttps://calibercorner.com/miyota-caliber-5r21curated dbtier 2retrieved 2026-09-083 facts on this pagecited, never crawled
- 3Internet Archivehttps://web.archive.org/web/20190530141402id_/https://miyotamovement.com/product/5R21/archivetier 2retrieved 2019-05-302 facts on this page