CSA 11-AD, 10¢ blue (large unevenly separated 4 margins) tied MACON / GA double-circle datestamp on semi-official cover imprinted C.S. Central Laboratory, (ordn.) Macon, Ga., / [Official Business.] which is an UNLISTED IMPRINT VARIETY similar to WD-OD-21 but with a longer line under Macon, Ga., different font for “O” of Ordn. as well as different spacing. Addressed to Walter Blake Esq., Pocotaligo, So. Ca. $450.

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