3 penny to 5 Mark imperial yacht on paper watermarked 1 (lozenges), complete set of six values with following variety: 21 I, 22 b, 23 II d, 24 II B and 25 II B - latter as upper margin copy, mint never hinged, faultless condition, unsigned, photo expertize Ronald F. Steuer BPP "in impeccable mint never hinged condition. ", Michel 185.-