1898年5月5日重庆寄上海破剖封,贴大字长距洋银贰分盖于贰分银票,深黄绿色,横双连中缝漏齿变体,销重庆大圆日戳,封背有5月17日上海工部戳,这个异常稀罕及极重要的实寄封,保存非常完好. 此项变体票存世记录只有两件双连票及一件六方连票,而这实寄封是已知唯一的一件.。1897 New Currency Surcharges,Large Figures Surcharge, Wide Setting,Second Printing,2c. on 2ca. dull yellow-green variety imperforate vertically,, a horizontal pair tied by Chungking 1898 (5 May) Dollar dater on opened-out envelope to Shanghai with Shanghai Local Post (17.5) c.d.s. on the reverse. Very fine and an exceptionally rare and important cover. Only two pairs and a block of six have been recorded, this is the only cover. S.G. 59b; Chan 58f. Photo