Couraud's 1985 audit found 260 of 1,392 Azilian pebbles to be fakes

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Key facts

• Claude Couraud's 1985 book L'art azilien gathered scattered material on 1,392 decorated stones, examining their pigments, claimed surface deposits, designs, and chain of ownership and evidence of authenticity.
• Of the 1,392 stones, 868 showed characteristics supporting their prehistoric attribution, 264 could not be determined either way, and 260 were rejected as fakes — about 19%.
• Counterfeits came mostly from excavation workers supplying museums across Europe and private collectors, since simple ochre patterns on pebbles are easy to imitate.
• Couraud identified 246 theoretically possible combinations of two signs but found only 41 of them in the collection he analyzed, indicating that signs were regularly associated rather than randomly combined.
• Couraud also noted preferences for particular numerical groupings, with many pebbles carrying between 9 and 13 marks, and speculated about a relation to a lunar month of about 29.5 days while stating the data were insufficient to demonstrate a calendar.
• The video notes that scholars who read the pebbles as an alphabet or proto-writing are a minority position, while the fake rate does not undermine the documented wide distribution of the objects.

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