I like that, that's a nice thought. It looks like a boundary stone.
Thanks for that I hadn't thought of a boundary marker, the Williams-Watkin-Wynne boundary stones with WWW that abound in N.Wales are far smaller. The Cast Iron Great Western Railway boundary markers are designed to give a nasty injury, at knee height, if the hedge or fence that they were originally put in should be taken away.
At some time it appears to have been a hormonal tally board for the more determined in a rather sparse community.