9N15 CSS SN10 Japanese Occupation Shanghai - Nanking Surcharge 50c on 3c block of 15 (5x2) with printers imprint at top in UL selvage. Advertisement of stamp service on back. (2 images)

9N15 CSS SN10 Japanese Occupation Shanghai - Nanking Surcharge 50c on 3c block of 15 (5x2) with printers imprint at top in UL selvage. Advertisement of stamp service on back. (2 images)