Rob, Thanks for the thoughtful and detailed replies - I really appreciate it. Very briefly, I understand the 3D argument for these possible overstrikes - the farthings are the same. I will go into more detail in my next post. There is information on the mintage of Charles II coppers, despite what Craig said. In all some 10,000,00 1d equivalents (split between 1/4 and 1/2d), which is a substantial amount. Again I will supply details in my next post, and try and give an estimate between the 1/2s and 1/4s. Sorry this is so slapdash compared to your answers - I am a Welsh rugby fan, and kick-off against Italy approaches. More tomorrow. Teg