Cover franked with single 1897 10c vermilion (SG 187) tied by MONTEVIDEO cds dated 15 JAN 1899 with fine strike of straight line 'POR VAPOR *SIRIO*' ship marking in purple. Addressed to USA with arrival cds on reverse. The Sirio was an Italian cargo & passenger ship belonging to the Navigazione Generale Italiana which was wrecked off the coast of Spain in 1905.