HC Deb 30 June 1969 vol 786 c50W
Mr. James Davidson

asked the Chancellor of the Exchequer if Bank of England or Scottish banknotes, which have been deliberately stained by a patented device operated in the event of attempted theft, will still be legal tender.

Mr. Taverne

Such staining would not affect the legal tender status of Bank of England notes. Scottish banknotes are not legal tender.