What is this Utensil? Thrift store find.
I have that. Surprisingly, it's both a nut cracker and a bottle opener (or so says the package insert).
I bought mine about 10 years ago from QVC. They came in a package of two. There should be a spring connecting the two halves. I think you can see the hole for it in the second picture, right side, toward the top.
It works pretty well as a nutcracker on larger nuts. Never tried it to open bottles. I don't know that the missing spring will have an impact on it's use as a nutcracker.