世界最早的邮票——1840年5月英国发行的“黑便士”邮票,是集邮者经常关注的话题。“黑便士”邮票以维多利亚女王侧面浮雕像为主图,采用雕刻版印制,全张为12×20=240枚。当时英国的币制为1镑=20先令,1先令=12便士。邮票每横行12枚为1先令,全张20横行正好1镑。邮票的左下角和右下角均标有字母(下称票位字母),240枚每枚不 The world’s earliest stamps - “May Pen” stamps issued in May 1840 in the United Kingdom are topics of constant concern to collectors. The stamp of “Pennies” is mainly printed on the side of Queen Victoria, with an engraving printing. The full sheet is 12 × 20 = 240 pieces. The British currency at that time was £ 1 = 20 shillings and 1 shillings = 12 pence. Stamps for every 12 lines of 1 shillings, full 20 full ramp is exactly 1 pound. The lower left corner and lower right corner of the stamp are marked with letters (hereinafter referred to as ticket letters), 240 each not