This really neat, sage green, GB Victoria, 4d, 1877-78 (SG153, Plate 16(B B)/Spec.: Z9) issue was used at the British Post Office in Greytown, Nicaragua! It's in fine-very fine condition, but does have some old hinge remnants at the back. Two nifty, partial CDS cancels form an almost complete SOTN CDS! GB stamps used abroad from Greytown, Nicaragua, are not easy to come by, let alone with such a gorgeous, composite, SOTN CDS!