1952 (12 Apr) China Philatelic Association 4th Exhibitiion illustrative postcard, from Hong Kong to Shanghai, f.w. Hong Kong KGVI 1c +
1952 (12 Apr) China Philatelic Association 4th Exhibitiion illustrative postcard, from Hong Kong to Shanghai, f.w. Hong Kong KGVI 1c + Centenary of British Occupation 4c, tied by Hong Kong wavy line d.s. Arrived Shanghai branch PO No. 23 (17 Apr). 1952.4.12 中國郵學會第四屆郵展明信片，自香港寄上海，貼佐治六世1分 + 開埠百週年4分，銷香港波浪紋日戳。4.17抵上海23支局。
