British, Irish and World Banknotes

States of Guernsey, colour trial £5, ND (1969), serial number A 000000, brown on yellow and blue underprint, reverse brown and blue, red specimen overprint, one hole punch, mounting traces along left margin, faint stain in lower margin, about uncirculated and rare
BNYB GU42a, Pick 46ct £300-400

It is not clear whether this note was printed as a colour trial, or as specimen with the colour being changed last minute.