1 / 2 Groschen black, rose gum and 2 Groschen ultramarine, white gum (2), together on front of cover of an international letter with cancellation through blue two ring cancel \"Hanover 2.1. \" a value to 2 Groschen with crease, otherwise perfectly choise copy condition, photo expertize Berger BPP, Michel for single stamp 710.-