Toho made this to sell their movie, somewhere in the world. fans have long speculated about the possibility of an English dubbed version of their version, but in nearly 50 years it hasn't shown up yet. that makes me think there never was one, since most English speaking parts of the world got the US version.
this first showed up on Toho's Laser disc version, which even non-subbed was fun to watch, and see the differences and the similarities between each version. I've talked about both several times so there's no reason to rehash my love of the first Godzilla and first King Kong movie I ever saw. it also was the first giant octopus movie I ever saw as well, now that I think about it! boy, that sure explains a lot.