Royal Bank of Scotland plc, 」20, 4 August 2000, Commemorative Series, the Queen Mothers 100th birthday, serial number QET 000003, pale purple on multi-coloured underprint, Lord Ilay at right, gold crown at left, F.Goodwin signature, reverse purple, the Queen Mother at left, Glamis Castle at right (PMS RB106, Banknote Yearbook SC864), uncirculated