In the vein of artefacts, a rather older and much more impressive handaxe from Britain, estimated to be between 500, 000 to 300, 000 years old.
Note that it almost seems that the shell was an intentional detail...
Read more here: https://stonetoolsmuseum.com/artefact/europe/handaxe-3/1878/
The whole museum is a trove of fascinating tools & artefacts, and it's a bonus that you can rotate the models in 3D.
I need my own neolithic handaxe with a shell inset...