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see 45th Infantry Division (United States) - Wikipedia, the free encyclopedia
for the patch of OK nat guard prior to WWII

more pictures with symbol. Same direction of points.
These cards are all from 1909 and 1910 well before the Nazi's anywhere.

As mentioned, this is an ancient symbol and prior to WWII was used by numerous companies and was, among others, a good luck sign. I have dozens of postcards that have them, I have an adjustable...