1870, 15¢ orange, split "I" grill. In combination with 1870, 3¢ green on registered cover to Spencer, Mass., tied by grid cancels with partial "Worchester, Mass., Aug 2" cds at left, manuscript registry number, with original 1871 enclosure; cover with tone spot and nick at top, Fine, a rare on cover usage of the 15¢ I grill, approximately 8 known usages, this being the only one with a split grill; with 2005 P.F. certificate. Scott No. 141+147  Estimate $1,000 - 1,500. $0 (Image)