5c brown & sage green 'Opening of Port of Montevideo' issue a fine bottom marginal IMPERF COLOUR TRIAL PROOF strip of three on thick card with 'Compania Sud-Americana de Billetes de Banco, Buenos Aires' IMPRINT in bottom margin. (SG 283)
5c brown & sage green 'Opening of Port of Montevideo' issue a fine bottom marginal IMPERF COLOUR TRIAL PROOF strip of three on thick card with 'Compania Sud-Americana de Billetes de Banco, Buenos Aires' IMPRINT in bottom margin. (SG 283)