British, Irish and World Banknotes

ERROR: Royal Bank of Scotland Limited, consecutive £1 (2), 2 May 1978, mismatched serial numbers B/41 293428-29341?, B/41 293429-29341?, last digit of the serial number at top right partially missing, a blue ink line across the face of each note, otherwise uncirculated (2 notes)
PMS RB75 £100-150