Lot 1857 o
1929, ½¢ olive brown, rotary, neat wavy line machine cancel, perfectly centered within large evenly balanced margins, rich bold color, a Superb jumbo, this being the highest graded used stamp and the sole example, with the next highest grade being a 95; with 2019 P.S.E. certificate Graded (Superb 98J).Scott No. 653 $1.