Watch List notes:

South Africa, Standard Bank of British South Africa Limited, twenty pounds, 18-, front proof on card, back on paper mounted on card, stamped 'Specimen, Waterlow & Sons Ltd, Banknote Engravers' (Hern 395B; Pick S582p1, p2), light water staining on card, minor foxing, good extremely fine to about uncirculated, rare (£3000-3500)