Representative issue study
Taisho 5 (1916) 1 Sen Bronze
The first-year small bronze type tests continuity across Taisho and Showa.
大正五年一銭青銅貨
- Date
- 大正五年 (1916)
- Denomination
- 1 Sen
- Material
- bronze
- Issue class
- regular-circulation
Context
Historical and monetary setting
Its design generation continued beyond the reign boundary without becoming a new series.
Identification
How to classify the object
Verify date, mass, diameter, plain edge, and bronze surface; color alone is insufficient.
Evidence boundary
What this page does not claim
The exact 1916 pair does not represent later weight or alloy generations.
Issue evidence
Specifications, grading, and authentication
- Mass
- 3.75 g
- Diameter
- 23.03 mm
- Hole
- none
- Edge
- plain
- Production year
- 1916
- Legal issue year
- 1916
Material-specific grading
Brass and bronze: assess color change, verdigris, spotting, cleaning, fingerprints, and strike.
Authentication
Verify weight, diameter, thickness, alloy, magnetism, hole, edge, date and character style, die alignment, and evidence of casting, plating, altered dates, fake patina, or modern reproduction. Do not use destructive testing.
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Related Taisho–Showa references
Evidence
Sources and scope
These links support the claims on this page. Source authority does not imply permission to republish source images.
Official specifications, first-issue years, legal-expiry dates, wartime and postwar regular types.
Open sourceImage identity and file-level reuse metadata only; historical claims are verified elsewhere.
Open source