This entry records that the reference exists. Its specifications have not been researched, and nothing here should be relied on for authentication until they are.
Jacques Bianchi Marseille · JB300
JB300
Ref. JB300 (1990s, claimed)
Also written: JB300, JB 300
Provenance of this record
Sources & Evidence
No sources have been cited for this reference yet. Its specifications should be treated as unverified until they are.
Last verified: Not yet reviewed
Claim-level evidence
Researched claims
Each fact below is one source's statement, reviewed by Atlas & Crown before publication. Manufacturer specifications, independent research and observed examples are labelled separately, and disagreements are shown rather than settled.
The badge on each field is the confidence of the field as a whole, derived from how many independent sources agree; the badge on each statement is what that one source can support on its own.
No reviewed research claims are on file for this reference yet.
Confidence describes the strength of the evidence behind a statement about the reference. It is not a judgement about any individual watch.
Open questions on this reference
Production of the 1990s JB300
Was a JB300 actually produced in the 1990s as claimed, in what quantity, and with which caliber?
Scope The reference is seeded as a placeholder with a claimed ETA 2824 and carries no movement fitment, because the catalog cannot establish that the watch existed as described. That is the correct treatment and it should stay until evidence arrives: a reference recorded as a placeholder is visibly incomplete, where one filled in from the brand's account would look researched.