Thanks for all the comments yesterday. Some people asked what it is and how it works so here is another shot of the top, this time showing the complete toy. It is actually quite simple. You hold the ring and pull the string and it spins. You can then put it on ground, your hand or just keep holding it. Manu likes it on his hand as it tickles his hand. As kids we used to play with different kind of tops. Tops that used to hava a nail on wich they used to spin and there was no ring in those tops either, you had to wrap the string and throw them on the ground.
On Mental Floss : Alistair Pereira—Grim reaper in a Mitsubishi