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两年前,我收进了一枚靖康重宝,据卖者称是北方出土的生坑币,此币径31.7毫米,厚2.1毫米,重10.2克。边廓形成的两圆圈很圆,且基本同心,币的厚薄也很均匀,惜钱文及穿廊有塌陷,有流铜,整币为坚硬入骨的黑黄色铁锈及其间间有的铜绿锈所覆盖。此币面深背浅,面穿大于背穿,背廓宽于面廓。整币给予人的手感是十分光滑圆润的。经检测,其材料成分如下:铜63.487%、铁22.246%、锌9.718%、锡2.075%、铅1.863%、锑0.555%、镍0.044%、银0.013%,说明其材料成分较杂,这也是古币应具的
Two years ago, I received a copy of Jingkang Heavy. According to the seller, it was a raw pit coin excavated in the north. The coin had a diameter of 31.7 millimeters, a thickness of 2.1 millimeters and a weight of 10.2 grams. The two circles formed by the profile are very round and basically concentric. The thickness of the coin is also very uniform. However, there are collapsing money and corridors, flowing silver, hard black-yellow rust and copper patina between the whole coins . The currency surface of the deep dorsal, face wear larger than the dorsal, back profile wider than the profile. The coin gives people the feel is very smooth and rounded. After testing, the material composition is as follows: 63.487% copper, 22.246% iron, 9.718% zinc, 2.075% tin, 1.863% lead, 0.555% antimony, 0.044% nickel and 0.013% silver, Currency should be