Yup... good stuff over there. Bruce just chimed in as well:
It's likely from the 1938 re-release, because this coincides with the heyday of the "other company" type companies.
I'd say it's surely not the "other company", Leader Press, or Woolever Press (looks unlike those, and the last two wrote their name on almost all they did).
We have sold several posters just like this on other titles of the 1930s and 1940s, so this is not the only poster they did.
Odd posters like these rarely command big bucks, except when they is an uninformed new collector on the scene.
Bruce