The BN I believe has a set of weight called the ‘Pile de Charlemagne’. Munro (at Toronto) claimed this set of weights is possibly 15th century, thus much later than Charlemagne. Grierson (at Cambridge) suggested it does not represent the pound used by Charlemagne at all (that its pound is actually 9/8 of Charlemagne’s commodity pound).
But I cannot find out what authorities in France think about this matter. I have Hocqet’s collected papers, but he does not seem to mention it. Witthoft in Germany has written on Charlemagne’s weights, but only in German (which I also cannot read) and he seemed to make the topic extraordinarily complicated, and very different from Grierson.
Can anyone assist?