Cover franked with pair 1923 3c blue (SG 394) tied by CARTAGENA cds on purple with two strikes of provisional boxed 'PAGO 1 CTS CARTAGENA' cachet adapted from one of the large boxed postal cancellations to pay the additional 2c due to shortage of 1c & 2c stamps. Addressed to UK. Cover is trimmed at base and has clipped corner but a rare provisional use. Pictured and described in Copacarta Journal of the Colombia & Panama Philatelic Study Group Vol 24 No. 4 page 3.