Cover by Marie Severin and Frank Giacoia. First up the original art (via comicartfans.com). The fine line work really jumps out here:

Next, a scan of the published version. Between the state of the art printing of the day, 40+ years of yellowing, and a scan of unknown provenance it looks a bit dark and muddy:

Finally, the version currently available from Marvel.com. I’m assuming this was updated for use in the Marvel Masterworks edition, and probably optimized for web as well. Much of the artwork for the Masterworks editions has been touched up or recreated from scratch.

Not sure if that’s a repo, but if it is it’s pretty damn good.