拍品號碼 5329

1931年5月31日上海寄德國掛號航空封，正背面貼航空票及普票10枚，合郵資4.5元，銷上海航空開辦紀念戳。正面蓋有柏林紅色航空戳，背面另有德國中轉和到達戳。上品。 franked on both sides Airmail & Regular Issues x 10, rate $4.5, tied by Shanghai Airmail commemorative cds. A Berlin C2 LUFTPOST mark in red on front, Germany transit and arrival cds. on reverse. VF-F.