1921, 1¢ green, rotary coil waste, imperf between, horizontal pair, full o.g., precision centering amid beautifully balanced margins, bold bright color and very fresh, Extremely Fine to Superb, a remarkably choice example of this rare coil waste variety; with 2011 P.F. Graded certificate (XF-S 95 XQ). Scott No. 543a  $5,000. $0 (Image)