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Movement identification: documenting evidence before naming a calibre — The 2813 - AKA the 21j

Thread starter ReferenceLog 00870
Start date 10/10/26
Replies 3

ReferenceLog 00870

Member

Thread starter

10/10/26

Section context: The 2813 - AKA the 21j.

Which views would make a movement question answerable? Record the stated calibre, the watch reference, the visible markings and the source of each photograph. Do not open a watch merely to supply a forum picture; use documentation already available or ask a qualified watchmaker.

CaliberReader 00872

Member

10/10/26

Section context: The 2813 - AKA the 21j.

How should a disputed identification be recorded?

BenchNotes 00871

Member

10/10/26

Section context: The 2813 - AKA the 21j.

A rotor inscription is a lead rather than a complete identification. I would label the photograph and leave unseen features as unknown instead of filling them from a similar movement.

CaseFile 00873

Member

10/10/26

Section context: The 2813 - AKA the 21j.

Keep the proposed identification separate from the evidence supporting it. When no exact technical document is available, an unresolved identification is a useful result.

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