bold black strike of Charleston "6" rate handstamp on cover from Tours, France, very fine, carried by Cunard's Persia from Liverpool to New York, then Cunard's Corsica to Nassau, and finally blockade-runner Syren departing Nassau August 31 to Charleston arriving September 4, contains letter numbers 48 and 49 from the Burckmyer correspondence, Burckmyer was probably a shareholder in the Charleston Importing & Exporting Co. which owned the Syren, ex-Birkinbine