ag (chemical name) or s (the first letter in English) + silver content such as 999 or 925. Because 999 is soft in texture, it is not suitable for wearing as jewelry. Generally, silver jewelry is marked ag925 or s925. (That is, the silver content is 925 parts per thousand, as the saying goes, "pure silver"). Silver bars do not need to be worn and are suitable for collection. Higher silver content and purity will be marked ag999 or s999, (that is, the silver content is 999 parts per thousand. , as the saying goes, "a thousand pure silver"). In addition, some brands will also print their own brand logo or initials.

Is ws the brand logo?