(x) Bank of England, L.K. O'Brien, specimen 10/-, ND (1955), serial number A00A 000000, brown, Britannia at left, value at right, (EPM B271s, Pick 368cs), pinholes, black SPECIMEN overprint diagonally twice across face, in PMG holder 63 CHOICE UNCIRCULATED and rare.
Estimate: £600 - £800