1901, 10¢ Pan-American. Beautiful fresh nearly perfectly centered stamp on clean registered cover from Carbondale, Pa. to New York City, tied by straight line magenta registry cancel, an Extremely Fine cover; with 1991 P.F. certificate. Scott No. 299  Estimate $150 - 200. $0 (Image)

1901, 10¢ Pan-American. O.g., very lightly hinged, beautifully centered, Very Fine, with 2001 P.S.E. certificate. Scott No. 299  $160. $0 (Image)

1901, 10¢ Pan-American. Block of four, o.g., very lightly hinged, Very Fine and attractive. Scott No. 299  $675. $0 (Image)

1901, 10¢ Pan-American. Block of four, disturbed o.g., well centered, Very Fine. Scott No. 299  $675. $0 (Image)