Watch List notes:

Bank of England, Cyril Patrick Mahon (1925-1929), specimen £20, London 9 April 1925, serial number 03/Q 00000, black and white, ornate crowned vignette of Britannia top left, 'I promise to pay to Bearer on demand the sum of Twenty Pounds' in text at centre, value in black tablet low left, printed serial number, date and signature,, (EPM B217sa, Pick 322s), red 'SPECIMEN' overprint, in PMG holder 53 About Uncirculated and very rare.

Estimate: £7,000.00 - £9,000.00