Historical Horse Racing Machines: How They Work

I am looking for a potemtial source for parts and manuals for the Sigma Derby Horse Racing slot machine that was in wide use in Las Vegas

Pari-mutuel horse race wagering fell 21% after slot machines were introduced and 16% following the introduction of table games On the other

horseshoe bend slot canyon Historical horse racing , the electronic, slot machine-like games that allow players to bet on the outcomes of previously run horse races,

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