Bank of Scotland, £20, 12 June 1956, serial number 4/B 0317, brown on pale orange underprint, arms top centre flanked by value in black tablets, bank title and blue medallion at centre, ornate vertical arms in panel at left, Craig and Watson signatures (PMS BA109e, Banknote Yearbook 143a), this is the Banknote Yearbook plate note, fresh and original, good extremely fine