Quartet (Rev A, 8751 317-unknown) is another arcade game version of Quartet, this version being revision A and having a partial model number. The 'unknown' part of the model number suggests some information is missing. Like the previous entry, the lack of context means there's limited information on this version's history, gameplay, or developer. It's likely a sequel or a revised edition of the original Quartet game.

Quartet (Rev A, 8751 317-unknown)

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