New vintage sterling silver cannabis leaf charm pendant (gold tone)

New vintage sterling silver cannabis leaf charm pendant (gold tone) Highly detailed in the shape and the veins from the casting mold. Very shiny. New vintage c. 1970s. Probably made in Mexico. Hallmarks: A?? (3 letters) inside a ring, STERLING. It was tarnished grey black and, thinking it was silver, I polished it with toothpaste and warm water. I can’t believe how gold it is! It must be plated or something. 11x15 mm charm pendant, not including bail Super smooth front and reverse but slightly sharp edges. May be a man’s pendant but unisex by today’s standards.