440 with 440r, CSS 500 with 500a, October 20, 1940, 5c Dah Tung Dr. SYS surcharged 4c. in sheet of 100 (10x10) with double tso variety in position 78/100, some perf. separations

440 with 440r, CSS 500 with 500a, October 20, 1940, 5c Dah Tung Dr. SYS surcharged 4c. in sheet of 100 (10x10) with double tso variety in position 78/100, some perf. separations