By my guess , two ears existed to clench it in place after passed through fabric or]
I didn't notice the other side, you may be right. That would eliminate the measuring spoon idea.It looks like there may have been another tang opposite the one shown. Maybe it clipped over the end of something like a bicycle axle?
Take into your kitchen and get a tablespoon and fill it and pour into this spoon like item and see if the measurement is the same.I found this about 8" deep with my metal detector and wondering if anyone has any ideas as to what it was used for. I'm guessing it's made of brass.