This is believed to be Mexican jewelry from around 1970 to 1980. The shallow "925" stamp and the locks on both sides are characteristic of this era. Also, it weighs approximately 60g, giving it a substantial feel. If you were to have a curb chain of this weight made today, it would be quite expensive. Please take this opportunity to acquire it. I think you can enjoy the unique vintage feel that differs from current products. Total length: 19cm Width: 1.3cm Weight: 59.5g