1c Dark Blue (63b). Deep shade and detailed impression, choice centering, unobtrusive strike of "Providence R.I. Sep. 2, 1861" double-circle datestamp, Extremely Fine, Don Evans notes in his book on the 1c 1861 Issue (p. 33) that the Dark Blue shade is very close to Indigo shade used for the "Premiere Gravure" (Scott No. 55) and in fact he believed that this should be the formal designated color name for this shade

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