I'll post this one because, although it is in rag order, it is rare to find any of these. James II Halfpenny, date probably 1687, struck in Tin with a copper core to reduce degradation. Tin coins were struck for a short while in England from 1684 to 1693 because Tin was more readily available than copper. The problem of its rapid deterioration brought the experiment to an early halt. This one was listed at a local coin auction with an estimate of £6 - 10. I spoke to their coin man, who had got no further than looking at the condition and did not realise the scarcity. Sadly others had also spotted it, so I spent a lot more than that to get it!