1923, 4¢ yellow brown. Bottom margin plate block of 6, o.g., never hinged, beautifully centered amid wide margins, strong vivid color, fresh and bright, Extremely Fine and choice. Scott No. 556  $350. $0 (Image)

1923, 4¢ yellow brown. O.g., never hinged, perfectly centered amid large oversized and evenly balanced margins all around, rich vibrant color, P.O. fresh and immaculate, a Superb gem, an absolute outstanding stamp; with 2005 P.S.E. graded certificate (XF-Sup 95). Scott No. 556  $43. $0 (Image)