VTG Atari Replacement Part Card CX801 OS 10K ROM for Atari 800 For Sale

VTG Atari Replacement Part Card CX801 OS 10K ROM for Atari 800
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VTG Atari Replacement Part Card CX801 OS 10K ROM for Atari 800:
$24.95

This is a vintage atari 800 card CX801 operating system 10k rom. I believe this was a working spare but I have no way to test.
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