Does Anyone Know What This Coin Could Be Please?

Thank you for your reply.



I think my attempt at a clearer image has just made it worse. Sorry.
Thank you for replying and your help. My eight year old is desperate to know what it is.

Do you know if there is a website with the different halfpennies shown please? I've tried to look for one but can't find all the variants.

It looks like a George III British halfpenny of 1806 or 1807 to me - Britannia's arm is bent and I think the upper arm has simply worn off.

I've attached a photo of my 1806 halfpenny for comparison:

I concur with the previous posts that (assuming it is an official coin) the piece is a halfpenny of 1806 or 1807. If so, there may still be traces of the deep groove that ran around the centre of the edge of these particular halfpennies.
With regard to your mention of "cartwheel" coins, although there were some cartwheel halfpenny patterns (dated 1797), the bust on these is larger, and there is no exergue line below Britannia - the waves extend to the raised border which is much wider than appears on the reverse of your photo.