Watch List notes:

(x) Bank of England, G. E. A. Kentfield, ERROR £20, ND (1991), serial number H29 156576, purple and multicolour, Queen Elizabeth II at right, reverse, Michael Faraday at right,
, (EPM B371), a large part of the Queen's portrait missing at right,
extra paper flap at top, in PMG holder 64 EPQ choice uncirculated, striking error.

Estimate: £350 - £450