It came out looking worse for wear, quite dark in colour, but with a slight orange tinge near one edge.
I've been over it with a toothpick and I'm not sure why I spent as much time as I did on it, but it doesn't look quite like any other Farthings(?) that I've found so far and I wanted to attempt to get an ID.
You may be wondering why it has a bit of a shiny/silvery look, well I tried wax, I tried pencil lead, also rubbing with thumb and forefinger but I couldn't make anything out. Desperation got the better of me and I picked up an oldish lead pistol ball and rubbed it over the surfaces to try and reveal something . . . anything.

It may be my eyes, but if I catch the light just right, I think I can see a double bust on the obverse? Could it be a William and Mary Farthing?
Any thoughts appreciated.
I can't even tell which way up this one is meant to be.