Watch List notes:

(x) Argentina, Banco Central, a Securency polymer test note for 1 peso, ND (1992-94), serial number 00000000 A, dark blue on multicolour underprint, Carlos Pellegrini at right, red PRUEBA overprint, printed on 'watermarked' Securency polymer,(Pick 339p), in PMG holder 67 EPQ Superb Gem Uncirculated, very rare.

Estimate: £1,000 - £1,500