Proprietary, 1874, $1 Green & Black, Green Paper, exceedingly well centered with unusually wide margins, strong paper color, lightly canceled; minor flaws including faint crease and some thin spots, Very Fine appearance; with 2002 P.F. certificate. Scott No. RB9b  $12,500. A CHOICE AND EXCEPTIONALLY RARE EXAMPLE OF THE $1.00 PROPRIETARY ON GREEN PAPER, OF WHICH ONLY 7 EXAMPLES ARE RECORDED. Larry Lyons listed seven used examples in his census (one stamp has since been certified as RB9a on intermediate violet paper) and one additional unused stamp has been found. Most examples have small faults. $0 (Image)