El Salvador 1896 5c Deep Blue Plate Proof Multiple MNH. Scott 157E var


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Unmounted mint corner block of thirty plate proofs on gummed, unwatermarked paper, depicting Mount San Miguel. Hamilton Bank Note imprint on the selvedge. Light toning and gum crease, not visible from the front. Note: Seebeck issues are thought to have been printed on up to eleven original papers and seventeen reprint papers. Assume a reprint paper unless stated otherwise.