Collection › Nigeria › #422
20 NGN
P-P-26
Needs review
✦ AI 88%
The AI flagged these for your attention. Use ✦ Fact-check to cross-check factual fields against another model's world-knowledge, or 🔍 Re-look at image when you suspect the AI misread the pixels.
-
Some fields the AI was unsure about — please verify:
- Series year: “—” (0%)
- Issue year: “—” (0%)
- Printer: “—” (0%)
Click ✦ Ask AI to verify or fix any below. -
The photo is blurry.Mark Retake — re-photograph in better focus.
-
Overall AI confidence is 88% (auto-approve threshold is 92%).Skim the Identity tab; the dots next to each field show what the AI was unsure about.
IMG_7034.HEIC
cropped
IMG_7035.HEIC
cropped
Where & when
What's on the note
Front: Nigerian coat of arms at center right showing the eagle with two white horses as supporters and the motto 'UNITY AND FAITH' on a ribbon below. The coat of arms was adopted in 1960 at independence and represents the strength and unity of the Nigerian nation. The shield depicts the meeting of Nigeria's two main rivers, the Niger and Benue, forming a Y-shape.
Back: Herbert Macaulay (1864–1946), Nigerian nationalist, politician and engineer, known as the 'Father of Nigerian Nationalism'. He founded Nigeria's first political party, the Nigerian National Democratic Party (NNDP) in 1923, and was a leading advocate for Nigerian independence from British colonial rule. He worked tirelessly for self-governance and social reform until his death.
How it was made
Signatures: Governor: signature visible; Director of Domestic Operations: signature visible
Security features: watermark,intaglio,microprint
Nigeria in Africa
Nigeria in Africa. Other countries on the same continent shown in muted grey.
Background & history
This note belongs to the Second Naira series issued by the Central Bank of Nigeria from 1984 to 1991. The naira was introduced in 1973, replacing the Nigerian pound at 2 naira = 1 pound. This series was withdrawn and demonetized in 1991 as part of anti-corruption measures. Herbert Macaulay appears on both the front (in watermark area, implied by design convention) and back. The serial number format 'B/OO COO C 43 986886' follows the Central Bank of Nigeria's standard prefix/suffix system of the period, though no documented serial-year encoding is known for this issuer.
Collector references
How it came to me
Moderate circulation wear visible, corners showing softening, paper retains reasonable integrity with some soiling
What it's worth now
Valuation history (1)
| date | low | high | currency | source | note |
|---|---|---|---|---|---|
| 2026-05-10 06:49:22 | 5.0 | 15.0 | USD | ai | from claude-sonnet-4-5 |
History & extractions
AI extractions (1)
Edits & decisions (0)
No edits yet.
Manual fixups
Find near-duplicates
Manual pairing override
Edit specimen #422
All fields below post to the same save endpoint. Sections collapse to focus on what you need.
Re-crop manually
Drag the four corners to mark the banknote in each image. Click Save crop to apply.