We know from the Datapoint 3300 Maintenance manual the characters were formed on a 5x7 grid, and on page 2-55 we have an "A". But is it known what the rest of the characters looked like? According to the Instructions manual, the 3300 had old ASCII style ↑ and ← instead of ^ and _, which doesn't match the TI datasheets.
This answer may not contain a good enough image( although the last link may also be useful since it seems to use identical font ), here is part of an image on the following catalog -
That catalog can be downloaded at -
Also, paste the name of the catalog detailed above, into google-search -
and some sites for interesting reading result.
Here's a restored one, but they did not upload a photo of the screen on. https://www.vintagecomputer.net/browse_thread.cfm?id=455
The following is part of a screen image for the Datapoint 1100 which seems to have identical font-
The link for the image is -