According to the handy dandy Bacro Spreadsheet an 800 Retrographics uses a Sony O7MP tube. Now, I think they were modified as the Retrographics 800/801s as I recall are liquid coupled. I don't know if VDC rebuilds these or what is required to convert a regular 800 CRT to fit a Retrographics. I think there have been some of these up on Ebay recently.
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