JIW / HISTORICAL REFERENCE PROJECT / 日本の時計資料室RESEARCH DESK BULLETIN · NO. 001 ↗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

How we know what we know

Historical claims must be traceable, and corrections must be possible.

Three layers of certainty

Documented: manufacturer catalogs, service manuals, museum collection records, verified contemporary advertising and legible original inscriptions. Observed: photographs and measurements of a specific watch in our possession. Inferred: interpretation assembled from those sources and explicitly labeled.

The difference between a model and a specimen

We research historical models. Separately, a physical watch tells us what survives today. One specimen can be assembled from components produced in different years.

About the images

Launch-era watch images are custom-made editorial illustrations, never represented as original catalog images, physical acquisitions, or proof of a specific dial. As the Nurse Station editorial workflow goes live, approved original photography will appear with an accession record.

Correction log

Corrections to public pages will include changed facts, dates and why a source was considered more reliable. No silent rewriting of provenance to make a story more entertaining.

Fiction is visibly separate

Barrel & Coil, Royal Pattaya and Viktor Chas stories are narrative entertainment. Their puzzles will live in editorial sidebars or clearly labeled files, never in a technical specification table.

Keep learning

Historical sources and bibliography ↗