A survey is underway of Bank of Ireland £1 notes in an effort to determine the relative rarity of each Type, variety and signature variation.
RSPS Progress Update Summary
•17.12.16: 52 notes; 41 prefixes recorded
•23.12.16: 61 notes; 48 prefixes recorded
•05.03.17: 63 notes; 49 prefixes recorded
•30.08.17: 65 notes; 50 prefixes recorded
There are three signatures and four Types for these notes.
Series F with branches: Baskin (1918–1919); Fleming (1920).
Series G without branches: Fleming (1920); Hinton (1921).
Image posts welcome, or send any scans by email for inclusion. The intention is to build up a picture of the surviving notes, and to create a date gallery of the notes in the main web site. PMI has recorded most of these notes by date, so we know they are out there.

Bank of Ireland £1 1918 — Series F. Baskin signature.

£1 1920. — Series F. Fleming signature.

Bank of Ireland £1 1920 — Series G. Fleming signature.

Bank of Ireland £1 1921 — Series G. Hinton signature.