cover 10pa. reddish brown and 20pa. ultramarine horizontal pair and single (all perf. 12) attractively arranged as a strip and affixed to 1880 (18 Jan.) entire letter registered to Vienna (20.1 arrival), all tied by bilingual "BEOGRAD/BELGRADE" c.d.s. and showing framed "RECOMM" h.s. adjacent; horizontal filing fold well clear of adhesives. Superb appearance. M.12/14IVA. Photo