This cool retro electro mechanical counter came out of a pinball machine circa 48 to 50. It was used to track free plays on the machine. Applying voltage to either solenoid increases or decreases the count on the counter. This thing worked when it was removed from the machine but has not been tested since then. Both solenoids move freely and the counter advances normally. The necessary springs are in place. The green face plate area is about 3 in square. The entire assembly is about 7 in by 5 in by 6 in.