Watch List notes:

ERROR: Bank of England, L.K. O'Brien, J.B. Page, £1 (4), 1960, 1970, a single note with different serial numbers M35 499962, M35 499963, another note with serial number M35 499963, a pair of identical notes with different serial numbers, U02B 702496, U02B 702497(EPM B285 B320 for type, Banknote Yearbook E3f (ii), E3g), good very fine to uncirculated (4).

Estimate: £500 - £600