I will post pics to confirm plastic wrap on cork.Still having difficulity getting good photo's without bad reflection and getting detail of stamps and signatures.

I get the pre-1941 due to the fact that the tube that matches the model is metal. As I understand, granger switched to plastic in container material in 1941 due to the war.
Then reel mount is marked 1930, but I assume that is the patent date not the rods, Next to GRANGER SPECIAL is the 1938 two flats below the Wright & McGill.
I have read about the lacqure finnish that gives the rod a unique amber color, and turn the thread the Granger green.
I got much of my information form BANJO and the many threads in antique, and appraisals.