State Dept., 1875 Special Printing, $2 green & black, overprinted "Specimen". Without gum as issued, deep rich colors, slightly nibbed perf at top, F.-V.F., a fresh example of this extremely rare 1875 $2 State Dept. Special Printing, with only 32 examples issued; with 2001 P.S.E. certificate. Scott No. O68SD  $20,000. $0 (Image)