Hmm, That is an odd little thing. Maybe a logo off a piece of luggage? Knowing what type of area it was found in may help -- playground, sports field, revolutionary war battlefield, etc.
Quick note though that it's not quite a bi-plane, but a high wing aircraft (only one set of wings showing, and we can see the wing supports, meaning no lower wing was present)? I only mention this to avoid possible wrong directions in google searches.