JIW / HISTORICAL REFERENCE PROJECT / 日本の時計資料室RESEARCH DESK BULLETIN · NO. 001 ↗
MODEL REFERENCE / CITIZEN / AUTOMATIC

Seven Star Deluxe

4-520955 (candidate)

A representative of Citizen’s broad mechanical era, where caseback codes, dial printing and movement markings are essential to dating.

Identification pendingPeriod unconfirmed
Illustrative reconstruction of Citizen Seven Star Deluxe
HISTORICAL CONTEXT

About the reference

This demonstration reference uses a candidate Citizen family designation known to our intake notes. We will not claim an exact production year, caliber, or original part configuration until images and sources are checked.

Why it belongs in the archive

A good historical catalog knows the difference between a lead and a fact.

Identification notes

Reference and date are NOT VERIFIED. Do not treat this demo as a catalog determination.

Proper identification compares the reference, movement stamp, dial code, caseback or case construction, observed hands and dial, and period catalogs. Replacement parts and past service can create contradictions without establishing fraud or a precise production date.

Sources & research quality

We distinguish direct manufacturer or museum evidence from collector observations, dealer descriptions and anecdotal reports. Claims not yet supported are left visibly open.

  • Further archival source verification is still pending.

Found an error? Contact us through the Research Desk, including a clear photograph of the relevant marking and the source of your proposed correction.

Documented specimens

None published through the Nurse Station pipeline yet. This stage intentionally demonstrates the reference layout without impersonating a real accession.

See how a future individual accession page will work ↗