Puzzler from another site

On May 31, 7:23*am, Frank Reid © 2010 wrote:
On May 28, 5:05*am, --riverman wrote:

You guys are pretty clever at figuring stuff out (I think of the time
Wolfgang posted some random picture and we all narrowed down the
location to a few meters).

This picturehttp://img.photobucket.com/albums/v80/harnett65/Album11/pic1940a.jpg
was posted on rec.puzzles on a regularly occurring thread, "What is
it?" It's an unknown, so there is no answer forthcoming. The only clue
is that it was found on a beach in Ireland....it measures about 8
inches on a side. Any ideas?

--riverman

You use it to hold a sheaf of wheat.
Frank Reid

That was my guess, but I couldn't find any pictures to verify it.