Here are two things I think are important: A) it looks like it is made of brass based on the apparent presence of verdigris and B) it was screwed into something ferrous (iron or steel) based on the fact that it has two holes and the back side of the piece has orange rust spots where the brass was in long-term contact with iron/steel.
All things considered, I'd call this a bracket of some sort. Anything from the bracket for the latch of an outdoor gate to a simple indoor curtain rod bracket. Either way, because it has a design and is brass, it was meant to be seen and be aesthetic, but it was mounted to something iron/steel so that rules out stuff like a spoon, decoration for apparel/jewelry/belts, etc.
At least that's what I am seeing.
-mcl