I've got Peck and Freeman on the shelf! It's the Spink pricing, rather than the ID that intrigued me as, presumeably, these prices have come from actual auction sales of type? I'm always up for viewing die and punch information at a deeper level, so will certainly try and dig out the 51 Will PM later, thanks again! Generally speaking the prices will reflect past sales, but if there isn't a major sale for a while you can get a mismatch between history and reality. Some prices have plummeted in Spink following the realisation that things aren't as rare as previously assumed. If there is no major farthing sale in a London auction, then prices are either going to drift upwards in a percentage increase across the board, or not get revised at all. If there were a couple sales realising below Spink book, the price would probably be revised down, assuming they reviewed it at all. People that know a specific field won't bother with prices anyway. Rarities are instantly recognised for what they are and appropriate bids made. Thanks, Rob! I always assumed they collated figures from a broad auction circuit, rather than just from the specialised sales! The triple quoted figures for unbarred A's in Fine did surprise me, especially when, for other types and varieties, and I use Elizabeth as an example, there appear to be no significant price differences, even for quite obvious variations (busts being an easy one)! It seems to make little difference with an Elizabeth Sixpence whether Liz has a ribbon in her hair, a bowler hat instead of a crown, or even smoking a pipe etc., etc! I just find it odd to see the 17/18C farthings so specifically valued!