Is it valuable to write a treasure on a silver ingot in the Song Dynasty?

It's worthless According to relevant public information, the current price of silver ingots in Song Dynasty mainly depends on the old and new colors of articles. As a unique metal currency in China, silver ingots were born in the Song Dynasty and stopped casting in the Republic of China. After three dynasties of Yuan, Ming and Qing Dynasties, it occupied nearly a thousand years' history in China's currency history. Because of its high value, high purity and sufficient silver content, it enjoys high value in commodity exchange.