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In 1855 Dr Marcel Jérôme Rigollot of Amiens strongly advocated the authenticity of the flint implements; but it was not until 1858 that Hugh Falconer saw the collection at Abbeville and induced Sir Joseph Prestwich in the following year to visit the locality.
The tools' position within the gravel attested to their age geologically and following visits to the site of Abbeville and Saint-Acheul by the paleontologist Hugh Falconer and the geologist Joseph Prestwich the great age of the tools was accepted by the wider archaeological community.