Have MTXX stamped behind 2 More mature silver earrings for a school teacher It's 123 ABC a book , peculiar and apple over the earrings, What does MTXX mean be sure to? W302 refers to the manufacturer’s trademark plus the 14K signifies that the piece is 14 karat gold. https://collinmhasj.tinyblogging.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-jp88-75508108