I see what you mean now, so possibly they fulfilled the quantity required before the year was out and sent back the dies. I have nothing to negate the fact that they just reused the old dies, it really wouldn't surprise me. One question I do have - was the equipment that the Heaton and Norton guys used subpar compared to London's? Because the striking was always a bit hit and miss at the best of times, so if it was down to the dies and not the machinery, surely the dies that were sent back and re-used would produce that 'mulshy' effect that we all know and hate but on the later London minted coins? Generally the strikes on the London coins from those years is a lot better, and to be given the contract in the first place I would have thought that any test pieces they provided to get the job would have been of a much better quality, i.e a problem with the longevity of the die and not the functionality of the machinery.