Do you have link to an image or listing? The search feature on the Spink site doesn't seem to work. Wait, never mind, see https://www.spink.com/files/catalogue/14007.pdf (p142). This seems to be BP 1953 L, not the seemingly more common F244. Here's the previous sale I was thinking of: http://www.londoncoins.co.uk/?page=Pastresults&auc=144&searchlot=386&searchtype=2 Some more discussion at http://www.predecimal.com/forum/topic/9390-1953-penny-mule-rob-bernie/ with what looks like allusions to the second ??? in my list. Here you go mate https://www.spink.com/lot-description.aspx?id=14007000929 - Damn at my bid of £ 2550 I thought I was going to win it Ah thanks - much better image. It really does look like a currency piece. That Spink coin is a very interesting piece - it's only the second recorded occurrence of a pattern obverse which Gouby now calls C* and has 122 border beads as opposed to the 121 on the currency coin of 1953 and 120 on the normal proof of 1953. I have a specimen which I sent to the Royal Mint for verification and they thought that it was an early strike, probably from 1952 which was never adopted.