So we got married this last weekend, and it was awesome and great. When we got around to opening gifts two days later, we discovered that one of them (a bagged gift) had no card, note, or any other identifying information. So what I'm trying to figure out: how do we go about politely inquiring from the subset of people who apparently did not give us gifts whether it might be from them? I don't want to give the impression that we're mad they're on the no gift list or anything, because honestly we don't care and we're just glad they came. But we do want to know, because we don't want to miss sending a thank you note to the person who *did* give it to us!
Basically, I can't think of any way to say "hey, we have a mystery present and you're on the suspect list bc you don't seem to have given us anything" that doesn't make us sound like total jerks.