The Amazing Spider-Man
On the left is the original art; on the right is the final printed version.
Issue#81, cover-dated February, 1970
(Which means it was released in November, 1969.)
Pencils and Inks: John Romita [ed: That’s Sr., of course.]
Letters: Sam Rosen
Note that the bottom half has been redrawn. According to Comic Book Artwork:
This was to be the original cover to Amazing Spider-man #81 but Stan Lee decided he wanted the front of Spider-man to be shown leaping over the cars, so John Romita drew another bottom half for this cover, including a new Spider-Man image, and that was what was used for the published cover.
I don’t know if that’s accurate, but it sounds reasonable. Since I haven’t been able to find any other explanation, I’m gonna go with this one for now.