cover COVERS: 1889 (Oct.) XU5 from Kalaiya bearing 1a. blue, 1892 (July) XU5 from Salyan bearing 1a. deep blue, 1895 (Apr.) XU5 from Kalaiya bearing 1a. dark blue, 1896 (Sept.) XU5 from Salyan bearing 1a. dull blue vertical tête bêche pair; fair to fine.