In the 1800s, an inventor named Montague Redgrave invented a game where a coiled spring and a plunger thrust a marble toward a series of pins. The player tried to knock over as many pins as possible. By the 1930s, manufacturers were producing coin-operated versions of the game, which had become known as “marble games” or “pin games”.
It was in the 1930s that the games was electrified. Bells and lights became standard features. In the 1940s, player-controlled flippers were introduced, adding skill to what was previously a game of chance. The marble balls evolved into metal balls somewhere along the way. Currently, standard metal pinballs have a 1 1/16 inch diameter and weigh 80 grams each. They come in a variety of finishes and hardness.
A non-metallic, ceramic pinball was introduced in 1993.
Photo – http://npaper-wehaa.com/yes-weekly/2012/06/13/#?article=1601739