Anything is worth fixing up to play and enjoy. If you're looking to flip and make money, just remember Chicago Coin games are not the most sought after EM pinball games made. You might be able to get $300 - $500 out of it in working condition and if it's in good shape.
Chicago Coin was great at making bowlers, gun games and other EM novelties. They didn't make a ton of pins like Gottlieb did. Around 1977 they got bought out by Stern Electronics at the time EMs were being replaced with solid state games.