10¢ Green, Type II (14), large margins to just in at top right, tied at left by beautiful strike of circle of 13 wedges cancel, red "Eastport Me. May 12" (1855) circular datestamp on cover to John H. Webster in Stockton, California, pencil "Sophia May/55" docketing at left, missing top and left flaps, minor soiling, Very Fine, the earliest reported use of any 10¢ 1855 Issue stamp, another cover from the same correspondence, with the same cancellation, town marking and docketing, is known used on August 28, 1855, which substantiates the docketing on the cover offered here, ex Jessup, Neinken and Fisher, illustrated in Neinken, The United States Ten Cent Stamps of 1855-1859 (p. 13), with pencil note on back "I am certain this to be the earliest known cover 10¢" and initialled by Edgar B. Jessup, this is the Scott-listed EDU for any 10¢ 1855 stamp (Scott 14-16) and the next earliest date is May 19, 1855, for Type III, Scott 15