20 pounds 1988 specimen

Common. While specimen notes command a modest premium over circulated examples, the 1988 Northern Bank £20 was part of a long-running series (1988–1996) with substantial print runs. eBay market data shows UNC specimens trading in the $40–$395 range with significant variation, indicating healthy availability. Specimen notes are typically retained in institutional and collector inventories rather than lost to circulation, maintaining moderate supply. No evidence of short print runs, recalls, or scarcity in existing catalogs.

Issued in 1988 during the height of the Cold War era, this note's reverse design celebrating satellite and computer technology reflects Northern Ireland's aspirations toward modern industrial and technological advancement. Henry Ferguson (1884–1960), depicted on the obverse, was a transformative figure in agricultural mechanization whose tractor innovations revolutionized farming across Britain and Ireland, making him a fitting emblem of Northern Irish industrial achievement and innovation.

The obverse features a three-quarter profile portrait of Henry Ferguson wearing glasses and formal business attire, positioned on the right side. The dominant element is a large ornate circular medallion in the center-left with intricate multi-layered geometric patterns in green, yellow, pink, and blue, exemplifying high-security intaglio design. Below is an illustration of an early automobile (circa 1910s–1920s), referencing Ferguson's pioneering work in motorized transportation. The reverse presents a symmetrical technological theme: on the left, a detailed satellite dish with technical line drawings; in the center, an abstract geometric hexagonal pattern; on the right, a computer workstation illustration with multiple monitors and control panels, reflecting late-1980s digital revolution imagery. The color palette—purples, blues, greens, yellows, and earth tones—creates visual depth and complexity typical of premium banknote design.

Front side: '£20' (Twenty Pounds); 'Northern Bank Limited'; 'ESTABLISHED 1824'; 'PROMISES TO PAY THE BEARER ON DEMAND'; 'Twenty Pounds Sterling'; 'AT HEAD OFFICE, BELFAST FOR NORTHERN BANK LIMITED'; 'CHIEF EXECUTIVE'; '24 AUGUST 1988' (note issue date); 'H. FERGUSON 1884–1950' (portrait identification, with historical note: Ferguson's actual dates were 1884–1960, suggesting a possible engraving error or variant); 'SPECIMEN' (indicating non-circulating reference note). Back side: '£20' (denomination markers in ornate frames); 'Northern Bank Limited'; 'SPECIMEN'; 'THOMAS DE LA RUE AND COMPANY LIMITED' (printer attribution).

Intaglio (recess) printing by Thomas De La Rue and Company Limited, London, evidenced by the exceptionally fine line work, complex guilloche patterns, multi-layered geometric medallion, and intricate security threading visible throughout both sides. The specimen note exhibits the full visual complexity of the production plates without the wear that circulated notes would show, allowing appreciation of de la Rue's sophisticated security features including background line patterns, decorative spiral corner designs, and finely detailed technical illustrations.

This is a SPECIMEN variety, marked with a red diagonal 'SPECIMEN' overprint, indicating it was a demonstration/reference note not released for general circulation. The date '24 AUGUST 1988' on the obverse appears to indicate the official issue date of this design series. A discrepancy in the inscription 'H. FERGUSON 1884–1950' should be noted against historical records (Ferguson lived 1884–1960), which may represent an engraving variant or deliberate design choice. The printer attribution 'THOMAS DE LA RUE AND COMPANY LIMITED' on the reverse confirms the security printer. Pick catalog P-195as designates this as the specimen version of the standard ND (No Date) / dated 1988 issue.