396 CSS 483 and 483a, 1939 and later, Watermarked Dah Tung Dr. SYS perf. 14, 50c. complete 4x5 transfer block of 20 stamps. "Extra line at right of lower right value box" at transfer position 4/20

396 CSS 483 and 483a, 1939 and later, Watermarked Dah Tung Dr. SYS perf. 14, 50c. complete 4x5 transfer block of 20 stamps. "Extra line at right of lower right value box" at transfer position 4/20