A classmate showed me a pendant that she recently acquired. It was described to her as representing some sort of blessing for marriage. None of the people who looked at it could figure out what the text might mean; speculation included unknown abbreviations or that this might have (abbreviations of) specific people's names. (Though it appears to be cast or molded, not engraved.)
Here are photos of the front and back. What (if anything) does it say/mean?