笔者集得一枚报刊发行邮件条形码标签(如图)。矩形,55×90mm。上部印有流水编号0670,收件局为山西灵石,并有8行期刊邮发代号、期别、份数等(如2-868《博览群书》第8期4份);下部为北京报刊发行局报刊邮件条形码,邮件编号503、寄发日期 I set up a newspaper publishers mail bar code labels (pictured). Rectangular, 55 × 90mm. The upper part is printed with serial number 0670, the receiving office is Shanxi Lingshi, and there are 8-line journal postal code, date and number of copies (such as 2-868 “Fair Book” No. 8); the lower part of Beijing Newspaper and periodical press mail bar code, mail number 503, date of dispatch