Postage Dues: SPECIMEN overprints as distributed to the U.P.U. comprising 1895-97 3c, 5c, 12c, 18c and 24c, 1987-99 2c, 6c and 8c, 1918-30 2c and 1930-38 16c, 1895-97 24c, 1897-99 2c and 8c and 1930-38 16c no gum, others part OG, few tone spots on gum of some (especially the 6c). SG cat £348 (10)