Original Bank of Ireland £100 Specimen banknote from the 1970s. A rare high‑denomination Northern Ireland issue, produced as a non‑circulating specimen for internal bank, archival, and security reference use.

Design features: – Classic Bank of Ireland arms and ornate guilloche patterns – Bold ONE HUNDRED POUNDS denomination – Distinctive specimen overprint / cancellation marks – Printed by Thomas De La Rue, the major security printer for Irish banks

Why collectors value this note: – High‑denomination Irish notes are scarce, and specimen examples are significantly rarer – 1970s Bank of Ireland issues are increasingly sought after due to limited surviving quantities – Specimens were never released to the public, making them prized by advanced collectors – Strong historical interest in Northern Ireland private bank issues prior to modern polymer designs.

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