Lower Palaeolithic Period, circa 400,000 B.P.. With a flat underside and some cortex showing on the domed upper face; with an old inked inscription: '1.1330 Twydall'. The Twydall finds are discussed in Beresford, F.R., Palaeolithic Material From Lower Twydall Chalk Pit In Kent: The Cook And Killick Collection, in Lithics, Vol.39, 2021. 78 grams, 63 mm (2 1/2 in.).

Found Twydall, Kent, UK. Richard Jones collection, Welling, Kent, UK, 1912-1915. Ex Rochester Museum, Kent collections. Specialist collection of J Edwin Jarvis. Ex Martin Schoyen collection, London, UK. Accompanied by a copy of an article on the site at Twydall. [No Reserve]