1863-67, 2¢ black, Plate Numbers. Balance of 17 plate number items; Plate 29 includes Lowenburg patent essay bottom margin strip showing full plate and imprint, regular issue (73) including mint block of 4, block of 8, strip of 3 and used single, Plate 30 includes a mint block of 18 and single, used with 3 singles including one on cover front, Plate 31 with two used singles, the rare 50's plates include and used single from Plate 51 (partial number) and a mint and used F. grill singles from Plate 53; condition varies, generally Fine or better. Scott No. 73, 79E-73P5, 93  Estimate $4,000 - 6,000. $0 (Image)