Found this one in some stuff. The anchor itself is like the one I sold a few months ago (picture on the right). Some one has welded a railroad spike to each leg of this one. It is missing the chain and rod. The rod on the other one was a 12 inch rod with a large head on one end and the other end had a hook that the chain was fastened into. As I recall the head was just a large washer with a nut welded to the rod. I think the rod was about 3/4 inch diameter. Should be easy to make the rod. Click on the picture to see a larger view of the rod.

The size of the one on the right was 7" x 6" x 3-3/4".