The Department issued this 3 cent stamp through the Norfolk, VA., post office, on May 30, 1951, to commemorate the Final Reunion of the United Confederate Veterans. The Central design depicts a United Confederate Veteran as he appears in 1951.
https://postalmuseum.si.edu/exhibition/about-us-stamps-modern-period-1940-present-commemorative-issues-1950-1959-1950-1951-6

Mar 28, 1951 #CivilWar NYT Across the top of the stamp will be the wording, "Final Reunion United Confederate Veterans," in whiteface gothic. In the upper left corner of the design will be an hour glass, with most of the sand in the lower half. It is believed that there are now only seven surviving Confederate veterans. The final reunion will be the sixty-first. The final reunion of the Grand Army of the Republic was held at Indianapolis in 1949 and was marked with similar postal honor.
https://www.nytimes.com/1951/03/28/archives/stamps-on-sale-may-30-to-commemorate-final-reunion-of-confederate.html