Does any great god know what is on this Sanskrit amulet? What's the point or something? Thank you all

This is om, but it's not old-fashioned Generally speaking, the front one is written in Sanskrit in Siddhartha style, which is called seed word. A seed word represents a god, and the most is A, or hrih, representing Tathagata or avalokitesvara. This is not old-fashioned, because the upper part is Sanskrit M, the symbol is the rising moon, and the lower part is Lanza style.