The one from https://www.digibarn.com/collections/screenshots/xerox-star-... , right? "15 May 84".

Also, https://www.digibarn.com/collections/screenshots/xerox-star-... shows the date as "Tuesday May 15", which occurred in 1984 but not 1981.

Further down it has a window with "9-Feb-84", consistent with this being from 1984.

And https://www.digibarn.com/collections/screenshots/xerox-star-... has date from 1983.