Proprietary, 1875, 5¢ Black, Rouletted, beautifully centered with strong color and impression, very light manuscript leaves the design fully visible, an Extremely Fine gem; with 1997 P.F. certificate. Scott No. RB16c  $1,850. THE FINEST RECORDED EXAMPLE OF THE 5¢ 1875 PROPRIETARY ROULETTED ISSUE. Most examples of this stamp are badly centered. This example is extraordinary with outstanding centering, light cancellation and strong color. $0 (Image)