El Salvador, */used. Two-volume accumulation of thousands of mint and used stamps organised chronologically from classics to 1960s, including first issues to 4 r, 1874 security handstamps again to 4 r, 1879 issues with lots of fancy cancels, '1889' handstamps in violet and black, 1895 1 p used, 1897 100 c mint, good range of turn-of-the-century overprints, officials to top values, 1912 6 c blue and black error of colour not listed in Scott, 1926 unusual manually inserted surcharge, etc, through to back-of-the-book material incl. 19th century revenues. Please inspect.