Keith Critchlow

In fact, going back to Critchlow's 1979 book Time Stands Still, we see the stones with ribbons called "a full set of Neolithic 'Platonic solids'" — photographed by one Graham Challifour, but with no information as to where they came from!

And Critchlow writes:

... the author has, during the day, handled five of these remarkable objects in the Ashmolean museum.... I was rapt in admiration as I turned over these remarkable stone objects when another was handed to me which I took to be an icosahedron... On careful scrutiny, after establishing apparent fivefold symmetry on a number of the axes, a count-up of the projections revealed 14! So it was not an icosahedron.