1926, 8¢ olive green, rotary, o.g., never hinged, perfectly centered amid beautifully balanced margins, rich vibrant color and pristine freshness, Superb, a wonderful mint gem, one of six examples to obtain this lofty grade with only four higher; with 2011 P.S.E. Graded certificate (Superb 98, SMQ $1,300). Scott No. 589  $60. $0 (Image)