Good Morning! There are a few TG possibilities. Can you photograph the mark? Can you photograph the link? Are any of the other links on the chain marked? What is the length of the chain? What is the width of the links? Is it marked 18ct? Can you weigh the chain?
Photos, (preferably three photos) of the chain and a close-up of the mark, and any further info about the chain (see above) should be supplied. A jewelry valuation is a simple & straight forward process.
