cover 'Confederate States of America, Nitre and Mining Bureau, Official Business' printed semi-official imprints, two different imprints (Dietz types III and IV) on separate covers, each franked with 10c Blue (12) and tied by c.d.s. cancels, on one the stamp is defective and has light cover stains, the other is a brown cover addressed to 'British Consul, Richmond. Va.', otherwise very good-fine lot, latter ex Dietz, total Dietz $300.00 for the basic imprints