Cover franked with 1926 4c deep blue on grey national issue and 1928 30c dull blue SCADTA issue with 'HOMENAJE A MENDEZ 28 DICBRE 1928' overprint in black (SG 411 & 55) tied by BOGOTA SCADTA cds dated 31. XII. 1928. Addressed to USA. A scarce stamp used on commercial cover.