What does 375 AG RM on gold ring mean?

The markings "375 AG RM" on a gold ring indicate that the ring is made of 9-karat gold, as "375" signifies that 375 parts per thousand are pure gold, meaning it contains 37.5% gold content. "AG" typically stands for silver in Latin (Argentum), suggesting that the ring may also contain silver. "RM" could represent the manufacturer's initials or a specific hallmark related to the brand or origin of the ring.