Uninked pencils for the cover of Silver Star # 3 (1983). I assume Mike Royer must have inked this for the published version using a light box.Looking at the close-up you can see even in the 80s Jack still was producing very detailed illustrations with plenty of great contrast. Nice example of how Jack would write his text on the actual illustrations instead of typing out a script.
Doing some quick internet research, it appears that cover may have been rejected, or for some reason Jack did another version. This was the actual published cover of Silver Star # 3.