Lot
1401 
Guam, 1899, 4¢ lilac brown, in combination with 1899, 8¢ violet brown (7) on registered cover to Malden, Mass., tied by "Agana Isle of Guam" and "Jun 14, 1900" straight line cancels with manuscript registry endorsement alongside, reverse with San Francisco transit and receiving postmarks; cover fold, Very Fine, this being The Earliest Known Usage of the 1899 4¢ Issue. Scott No. 4 Estimate $500 - 750.