10c Very Dark Carmine, 10c Violet, Sturgeon Patent Essays, Network Overprint and Underprint (79-E10 var).
Two items, first is Very Dark Carmine on stiff white paper with a clear blue network overprint,
two creases slightly break the paper, second is a horizontal pair in Violet on white paper with matching color network underprint,
sheet margin at left, margins in at top and bottom, Fine appearing and rare items which are both unlisted in Scott
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