Watch List notes:

(x) Federal Reserve Bank, specimen $20, series of 1974, green serial number I 23456789 A, dark grey and white, green seal and value at right, Hamilton at centre, I (Minneapolis) in field at left, signatures of Neff and Simon, (Pick 458s, Fr. 2071-Is), in PMG holder, 64 Choice Uncirculated, red SPECIMEN in field at left and right, rare.

Estimate: £1,000 - £1,200