John Evans was a key actor in the establishment of high human antiquity in 1859, and his pioneering role in launching the study of ancient stone implements is still celebrated today. However, scholars have overlooked the fact that Evans actually forged this contribution by shifting practices and preoccupations from coins to flint, from one well-established antiquarian domain in which he excelled, to another, new and as yet untested, domain. While providing relevant information on Evans' numismatics, this article shows how these transfers bear successively on the documentation of stone implements (terminology, descriptions, illustrations), their authentication (with regards to frauds and experimentation) and indeed their interpretation (the identification and explanation of their formal variability). Besides serving as an instructive historical case in ‘trans-disciplinarity’, the recognition of this initial numismatic imprint on the study of stone tools also has several consequences for current practices and interpretations in Palaeolithic archaeology.