Sorry no pics but few years back I found a complete V-8 engine. Called it in and had it checked. No record of it being stolen. Came back a few months later and it was still there.
Drug it down to the road and rolled it into the back of my truck thinking it would just be extra scrap in my next load recycling. Turned out to be a pretty nice engine once it was all cleaned up and overhauled. Still in my kids car.
Best I can figure is that someone changed engines and threw this one out as scrap not knowing what they were throwing away.