Representative issue study
Showa 23 (1948) No-Hole 5 Yen
The no-hole type establishes the first postwar 5 Yen design generation.
昭和二十三年無孔五円黄銅貨
- Date
- 昭和二十三年 (1948)
- Denomination
- 5 Yen
- Material
- brass
- Issue class
- postwar-transitional
Context
Historical and monetary setting
It preceded the holed rice-water-gear family and must remain separate.
Identification
How to classify the object
Verify absence of a hole, dove-and-plum design, brass surface, mass, and diameter.
Evidence boundary
What this page does not claim
It is not a hole-filled or damaged example of the later design.
Issue evidence
Specifications, grading, and authentication
- Mass
- 4 g
- Diameter
- 22 mm
- Hole
- none
- Edge
- plain
- Production year
- 1948
- Legal issue year
- 1948
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.
Continue
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