5 Groschen ochre-brown, as properly franked single franking to 50 penny 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 delivery cancel. Stamp selective rubbed spot right, otherwise impeccable and in this kind very rare document! Michel for the insured letter franking 340.-, for the Pfennig usage 220.- Euro, in combination?