1866-72 no watermark, ½a. pale blue vertical pair (rare -- some perfs. cut away at right) and a single, 1a. brown (2, one surface rubbed) and 8a. (late use, dated 1888) used; 8a. strip of eight (the complete top row of the sheet with margins) and a marginal block of eight (one with wide and more open capital "S") with part original gum

Details
1866-72 no watermark, ½a. pale blue vertical pair (rare -- some perfs. cut away at right) and a single, 1a. brown (2, one surface rubbed) and 8a. (late use, dated 1888) used; 8a. strip of eight (the complete top row of the sheet with margins) and a marginal block of eight (one with wide and more open capital "S") with part original gum