Registry, 1911, 10¢ ultramarine. O.g., never hinged, remarkably well centered amid evenly balanced margins, strong bright color, an Extremely Fine gem, an exceptional stamp. Scott No. F1  $150. $0 (Image)

Registry, 1911, 10¢ ultramarine. Bottom margin single with part imprint, o.g., never hinged, well centered with large margins, Extremely Fine and choice; with 1988 P.F. certificate and 2006 P.S.E. Graded certificate (XF 90, $315). Scott No. F1  $150. $0 (Image)