5 Gr. ochre-brown, as properly franked single franking to 50 Pfg in the first half-year 1875 on very decorative addressed insured letter over 165 Mark used, with Taxis single circle postmark "CASSEL 8 / 3" to Nordhausen, reverse two red varnish seal and issue cancel. Stamp selective rubbed spot right, otherwise faultless and in this kind very rare document! Michel for the insured letterfrankatur 340,-, for the Pfennigverwendung 220,- EUR, in combination?