Here are two videos of a early carilion glass bell clock.
One video is on the inner workings of the early carilion clock with twelve glass bells.
The other is of the clock cleaned up after running continuously for one whole year. As you can see the glass bells are very early and all original which include bubbles in the glass and a green tint due to the high iron content in the glass.
The clock is now back up on the wall and will be running again throughout this year!