Lot
4230 
1914, 5¢ blue, S.L. watermark, horizontal flat plate coil, guide line pair, o.g., never hinged, perfect centering with intense, rich color, an Extremely Fine gem; with 1980 P.F. certificate. Scott Nos. 447 $525.
A ONE-IN-A-MILLION PAIR WHICH SHOULD GRADE VERY HIGH.
Realized: $1,150