9N41 variety, CSS SN47, Shanghai and Nanking: 1943 surcharge on Dah Tung printing Dr. Sun Yat-sen $1 on 8c., perf 13 1/2, a scarce perforation variety

9N41 variety, CSS SN47, Shanghai and Nanking: 1943 surcharge on Dah Tung printing Dr. Sun Yat-sen $1 on 8c., perf 13 1/2, a scarce perforation variety