One hour barrier broken ! The new Simonelli spinning tops

My latest finger tops can spin for more than one hour. They are spun by multiple twirls of the fingers, then the very low frictions allow for these longest spins. The tips are recessed, for additional stability at low speed. The flywheels are covered by shrouds that reduce the air drag. I use special lubricated contact points which reduce the tip friction.
I don't know of any other finger tops that can spin for so long, (unless motorized or receiving in some way energy from the outside while spinning);
they are hand crafted precision spinning tops, (not suitable for children).
These tops can also perform two particular kinds of motion:
- Precession, (like any other spinning top).
- Nutation: this is a very fast wobble, (faster than the spin), peculiar to this kind of tops; normal spinning tops practically do not nutate.
The tips are replaceable and can be resharpened.
These two tops were not made on commission because they have a new design.