This is a pre-flipper game. There are multiple ways to win credits. There is a button under the cabinet to knock off credits which would’ve been used if a person sold their credits back to the operator or claimed a prize.
Seven Up Pinball Mods

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Genco, 1941 Pinball Mods
Manufactured By: Genco Manufacturing Co.
Date: January 1941
This is a pre-flipper game. There are multiple ways to win credits. There is a button under the cabinet to knock off credits which would’ve been used if a person sold their credits back to the operator or claimed a prize.