EXTREMELY FINE. ONE OF TWO RECORDED “SOUTHN. LETTER UNPAID” COVERS WITH A CORNER CARD OF ANY KIND -- THIS IS THE ONLY ILLUSTRATED BUILDING CORNER CARD. ONE OF THE MOST SPECTACULAR OF ALL CIVIL WAR ERA COVERS.
The last regular mail run between Nashville and Louisville was on June 12. On June 15, the Nashville postmaster, W. D. McNish, started to forward mail to Louisville by using the American Letter Express Company, who brought the mails across the lines and deposited them in the Louisville post office. This letter was among the first group of mail forwarded by express under this arrangement.
Louisville Postmaster J. J. Speed created the “Southn. Letter Unpaid” marking to explain to the addressees that the U.S. stamps applied by the senders were invalid for postage. There are 29 “Southn. Letter Unpaid” covers recorded in the Special Routes book. This is the only cover with a cameo corner card.
Special Routes Census No. SLU-3. Illustrated in Dietz and American Stampless Cover Catalogue. Ex Haas and Ballard. With 2009 P.F. certificate.