This is a hand machined solid brass worry coin. It is 1.5" in diameter and a hair over 1/4" thick. The coin has a 3/32" ceramic bearing for a contact surface. This is a very shallow bottomed spinner, it won't work well with lenses. It needs a flat surface. 

This one seems like a solid spinner, seen from the edge there appears to be no flutter. When viewed from above the it looks a little off. Sale price reflects this.