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Beside the difficulty about numo aureo there is a further variant between anulis ferreis and taleis ferreis (bars of iron). Can Caesar have in reality written both? May the original reading have been: utuntur aut aere aut numo aureo, aut aureis anulis, aut taleis ferreis etc.? Caesar speaks of the Britons having iron of their own, and it is highly probable that they employed ingots or bars of it as money, as the wild tribes of Annam and Africa do at present. They probably used their gold or bronze rings and armlets as money also.