FINE. AN EXTREMELY RARE EXAMPLE OF NORTHBOUND MAIL FROM THE CONFEDERATE STATES WITH MIXED CONFEDERATE AND UNITED STATES POSTAGE.
On June 12, 1861, the U.S. suspended service at the Nashville post office, which effectively closed down the last remaining northbound mail route from the Confederate States. The Nashville postmaster continued to forward northbound mail, but letters were stopped at Louisville starting on June 13. This letter reached Louisville around June 9 and was sent on to Philadelphia; however, it was diverted to the U.S. Dead Letter Office. The U.S. 3c stamp was not recognized, and the recipient was asked to remit 3c postage in order to receive the letter.
Ex Antrim. Ashbrook notation on back.