I got a free 8 X 10 metal shed this Saturday - still in the (very collapsed) box. Me and a buddy went to pick it up; the old guy who bought it 10 years ago never assembled it and decided it was in the way.
It is a tie plate! You got it too fast. But here is what I found and I think it is cool. 1918 model parts lying around on my property. For an old time plow.