银贰分, 第一次版, 不规则十八方连样票, 来自全张版票的上两行, 这组方连票上下两行都分别以蓝色笔写上SPECIMEN字样, 同时又以铅笔画交叉线贯通全部邮票; 是独特及唯一的最大方连样票.Chungking 1893 First Issue Plate Proofs 2c. vermilion in an irregular block of eighteen from the top two rows of the complete sheet, the stamps are marked with handwritten "SPECIMEN" in blue crayon and the stamps defaced with pencil marks. A spectacular and unique block. Photo<pr>