Well you really should call and stop by the various places you went in the day..
Once I went on a whole day out - shopping, lunch everything, realized when I got home that my purse was no longer in my possession. I called everywhere I went, and it had been found and turned in, and every single thing that had been in my purse, was still in there - including the couple hundred dollars in cash, which I was sure would have been removed.
So you just never know.. for what it means and is worth to you, it's very much worth calling the places you went and see if someone has turned it in.