Watch List notes:

Bank of England, P. S. Beale, L. K. O'Brien, £1 (2), 1950, 1955, serial number L63J 644086, L64J 420748, green, Britannia at left,(EPM B268 B273), last prefix of £1 note used under Beale and first prefix of £1 used under O'Brien, uncirculated, interesting pair (2).

Estimate: £220 - £280