You could always go to a local coin shop and see if they'll test it for you. I'm not sure what to make of it myself. It does resemble a spoon I had found which was silver plated though...
Welcome to T-Net. Is that spoon marked, if it is silver it should say sterling, if it has a makers name it can be traced on the web for more info. I have saw stories on the web over the years about dogs digging up cool relics.