What is 10k gold psco stamp mean?

A "10k gold" stamp indicates that the item is made of gold that is 10 karats, meaning it contains 41.7% pure gold and 58.3% other metals, such as copper or silver. The "psco" stamp typically refers to a specific manufacturer or company, often associated with certain jewelry items. When combined, these stamps signify that the piece is made of 10k gold and is produced by the identified brand.