Another Maxwell top.
This has the center of mass (COM) below the spin point, as proven by the very simple "hanging test".
Beautiful tops! Precession direction provides another very sensitive and readily observable test of the CM's position relative to the top's contact ( point of support)...
1. Spin up top on a pedestal
2. Release with some tilt -- say, 10-15°
3. Observe precession or lack thereof
If precession is prograde (same direction as spin), CM is above contact. If retrograde (opposite to spin), CM is below. If no precession at all, CM is exactly at contact.
If prograde, I consider the spintoy a true top. If retrograde, a "spindulum". Still looking for a catchy name if no precession.
Test is readily confirmed with any top with an adjustable CM-contact distance on a low-friction support -- e.g., Maxwell's dynamical top and many of my LEGO tops.
https://m.youtube.com/watch?v=u7_azTiWxyw