1854. 2 sk. blue and 4 sk. brown (strip of 3 + single stamp). Totally 18 sk. on cover from København to Rügenwalde. 2 sk. with imperfection and one 4 sk. with tiny tear. ONE OF ONLY 2 KNOWN COVERS WITH THIS COMBINATION. Cert. Møller BPP [ 3,9 ] [ ✉ ]