The Double Bubble Orange Crush Glass Clock is an exact replica of the collectable double bubble advertising clocks of the 1940s through the 1960s. This beautiful clock is all electric and the parts are even interchangeable with the original double bubble clocks. The Double Bubble Glass Clocks get their nickname, double bubble, because there is an inner crystal or glass bubble that displays the company logo and the hands of the clock are sandwiched between an outer crystal that usually displays the numbers of the clock.Diameter: 14-1 2 Materials: Glass and metal Type: Wall Clocks Weight: 15lbs.