VERY FINE. A RARE USE OF THE 10-CENT FRAMELINE ON A FLAG-OF-TRUCE COVER TO A UNION PRISONER IN THE SOUTH. VERY FEW FLAG-OF-TRUCE COVERS ARE KNOWN WITH THE FRAMELINE ISSUE.
The outer cover with U.S. postage and the datestamp of the originating town was discarded at the exchange point. During this period, northern prisoners were often shifted from place to place depending on the whereabouts of Union troops, which explains the address to Charleston and the receipt at Columbia. According to Brian Green, this is the latest known use of a Frameline stamp on cover.
Discussed in the Confederate Philatelist (Jan.-Feb. 1978, pp. 6-7, article accompanies)