CSA 13, 20¢ green, tied by RICHMOND / VA / Jul 20 cds on cover to "Mr. Thos C. Brown, Ballsville, Powhatan County, Va." with second neat strike below, with original 1864 business enclosure asking if addressee can furnish 3 sugar cane crushers, some light toning, Fine. Confederate Patent Office records show a patent issued to Brown for this new machine on February 8, 1864. A piece of machine history.