1929 Harbin (30 May) to Shanghai. Express cover, f.w. Unification ovpt. For use in Ki-Hei 1c + 4c + 10c + Junk ovpt. Limited For Use in
1929 Harbin (30 May) to Shanghai. Express cover, f.w. Unification ovpt. For use in Ki-Hei 1c + 4c + 10c + Junk ovpt. Limited For Use in Ki-Hei 1-1/2c, tied by Harbin bilingual cds. On reverse with express letter stamp receipt. Arrived Shanghai (4 Apr). 1929.5.30 哈爾濱寄上海。快信封，貼統一加蓋吉黑貼用1分 + 4分 + 1角 + 帆船加蓋限吉黑貼用1分5厘，銷哈爾濱日戳。背貼快信票票根。4.4抵上海。
