Watch List notes:

El Banco Internacional de Costa Rica, a colour trial 2 colones, San Jose, ND (ca 1931), serie B, no serial numbers, black, mauve, pale green and orange, Mona Lisa at centre, value at left and right and at each corner, reverse green, farmer and bullock cart loaded with hay at centre, value at left and right and at each corner, (Pick 167ct), in PMG holder 64 Choice Uncirculated, perforated, red 'SPECIMEN WATERLOW & SONS' overprint.

Estimate: £1,500 - £2,000