Perhaps too thick-walled for a bell. Very rough surface on the inside in contrast to the outside. On the outside, a pattern of 2 ring-shaped, attached and recessed dots can be seen in the center. In the middle, a 4mm wide and high suspension/pin protrudes. On the bottom outer edge, a 2mm wide and 1mm high line can be seen running all the way around. Above the line, further attached dots can be seen running parallel.