Lot 423Confederacy, Nitre & Mining Bureau Semi-Official Exhibit Collection, of 25 covers, a front and a couple ephemera items mostly mounted on exhibit pages in binder, a comprehensive study of semi-official imprint envelopes including nearly all the major printed imprint types as well as several new imprint varieties; with highlights including the only recorded example of the type WD-NM-01 imprint, type WD-NM-07 imprint on legal size cover franked with 1863, 20¢ green (13) from Richmond, Va. (only recorded usage of the 20¢ issue on a Nitre & Mining Bureau imprint cover), nice type WD-NM-08 imprint cover franked with 1862, 5¢ blue, Stone 3 (4) accompanied by a second cover with a unlisted variety of the imprint (mixed serif/sans serif fonts), type WD-NM-09 imprint cover showing a unique turned cover usage (Scott #6 pair usages both sides), fresh type WD-NM-10 imprint cover franked with 1863, 10¢ blue (11) tied by violet Augusta, Ga. town postmark, the unique WD-NM-15 "Disbursing Office" imprint on hand-carried cover to Capt R.C. Morton noting to contain "500 Postage Stamps", interesting turned cover with manuscript notation "Proposal to build Nitre Shead", two related semi-official covers from the Central Laboratory in Macon, Ga. (WD-OD-19) and the Charleston Arsenal (WD-OD-14), ephemera items including a 1864 Nitre & Mining Service C.S., 6th Dist. check; a wonderful collection of these scarce imprints with many important semi-official imprint items throughout, condition well above the norm overall, Very Fine and choice.
Estimate $4,000 - 6,000.
On April 11, 1862, an Act of Congress established the Nitre Corps as the independent Nitre and Mining Bureau under the War Department, for the purpose of supervising the mining of materials needed for military purposes.