This question has been answered before. It means that the gold alloy is 75% pure. in other words,18 carat. The remaining 25% can be a precious or base metal depending upon what colour gold the...
based on other answers to gold stamping i believe it would be a makers sign. if it has numbers and a k (i.e 123k) it would be how pure the gold is in carrots. (lol 123 carrot would be nice to have)....