WHOSOEVER HOLDS THIS HAMMER...

Images copyright MARVEL COMICS

Above is the original final caption box of THOR'S origin from JIM #83 before it was changed to how it appeared in print, below.  (With Thor's name misspelt as THORR.)  Interesting to see that perhaps Thor was intended as a try-out character to test reader reaction before launching him in a series.  I say "perhaps" because this may merely have been a gimmick to make readers think they had a say in what was published.  I'd imagine that it's more than likely the next few episodes were already lying in a drawer in STAN LEE's office.

UPDATE:  (See "Can anyone kindly explain this mystery to me?" post.)

For those who are interested, here's the inferior, re-lettered version from the first printing of the THOR MASTERWORKS book, and subsequent re-printings up to the softcover release.

When I first saw the above abomination, I re-lettered a new one (by hand) with amended spelling from the original - and sent it to TOM BREVOORT for use in future reprintings.  It was never needed though, as superior stats of the original proofs were eventually discovered.

Below is the original and my re-lettered version, side-by-side.  There are some slight differences, but I feel safe in saying that no one would've twigged it was completely new unless they'd compared it with the original - which, of course, they'd have had no need to 'cos it was so much like it.