1904, 10¢ Louisiana Purchase, bottom margin plate no. "2108" block of 6 with imprint, o.g., never hinged, wide margins and magnificent centering, rich bright color and exceptional freshness, Extremely Fine and choice, very rare in such exceptional condition, ex-Silver Lake; with 2007 P.F. certificate. Scott No. 327  $4,000. ONE OF THE FINEST NEVER HINGED PLATE BLOCKS OF THE 1904 10¢ LOUISIANA PURCHASE ISSUE IN EXISTENCE. $0 (Image)