This underlines the saying "never say never".
Maybe the 1950s patch has its origins from this marking, maybe not.
It still is very interesting.
At least people are/were doing research to support bloodybucket's statement.
I totally agree! Never say Never!
What a great thread and greatly appreciate the "coming together" of pertinent inormation.
And to Erwin's earlier question why this information hasn't surfaced before, all I can say is in my world of WWII USMC Aviation Squadron patches, we are still finding new patches/ variations and squadron info you'd think someone would have stumbled on in the last 70 or so years!! And with the internet, there is no question we can now put a lot of the parts and pieces together to complete the puzzle....