9 Kr. brown, overprint lilac, size A, being a postal union cover with four ring cancel "215" (small numerals) together with small single circle postmark "WIESBADEN 18 5" over railway mail "HAGENOW-ROSTOCK" to Ehmkendorf by Marlow in Mecklenburg-Schwerin. Reverse red varnish seal. Not frequent destination and a fine item!