Gotta add Palooka to the mix here. In the same Era with FIVE single drops. Knock down the 4 outer red ones, then the center to collect add-a-ball. That center target is also worth more every time you do it. (100, 300, 500, 1000!) I would love to aquire a few of those listed already, but am pretty content with my very nice example of Palooka

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Honorary mention today for Friendship 7, though it lacks drop targets, the theme/artwork is awesome! RIP John Glenn, you were one of those guys with 'The Right Stuff'.
(Manned Friendship 7, first orbit of earth for those that weren't aware)