Williams/Bally black plastic opto interrupter. Used on the following Williams/Bally machines: Attack From Mars Cactus Canyon Champion Pub Congo Corvette, Dirty Harry Demolition Man Flintstones Indy 500 Indiana Jones Jackbot Judge Dredd Johnny Mnemonic Junkyard Monster Bash Medieval Madness NBA Fastbreak No Fear No Good Gophers Popeye Roadshow Safecracker Scared Stiff Star Trek The Next Generation Shadow Theatre of Magic Tales of the Arabian Nights World Cup Soccer Who Dunnit Williams/Bally reference #03-9001.1.
