1938 (16 Apr) “For the Liberty of China” Esperanto promoational illustrative printed matter cover Canton to Sweden, f.w. SYS 5c +
1938 (16 Apr) “For the Liberty of China” Esperanto promoational illustrative printed matter cover Canton to Sweden, f.w. SYS 5c + “Por Libergo de Cinio” label, tied by Canton bilingual cds. Interesting. 1938.4.16 “為中國的自由解放而用世界語”宣傳印刷品封，自廣州寄瑞典，貼孫像5分 + 宣傳標籤，銷廣州三格英漢日戳。有趣。
