Spain, Official, 1854, ½o black on yellow, four horizontal strips of three (two with bottom margins) in combination with Official, 1854, 1L black on blue, vertical pair on piece, overlapping and all tied by superb strikes of blue 1851 Santander cds's, Extremely Fine and choice, a wonderful exhibition item. Edifil No. 28+31. Scott No. O1+O4  Estimate $400 - 600. $0 (Image)