cover 1873 E. from Bihac to Trieste bearing Turkey "Duloz" type 1pi. yellow and 20pa. green, both pen-cancelled, additionally bearing Hungary 1871 Engraved 5Kr. rose-red tied by "ZAVALJE" thimble type c.d.s. (21.10) in blue, reverse showing "KARLOVAC-KARLSTADT" transit and "TRIEST" arrival c.d.s. An attractive and scarce combination. Photo