I researched after making the post, found the same thing you guys did, but i was tired and went to sleep. I was actually surprised since i only noticed it when I looked at a con off my wing and I bet most people that look at it, will think it is a nazi swastika. I gotta say it it surprised the heck out of me. first time i ever flew the brewster and it will be the last. talking about easy mode and this is from a guy that mostly flies the spit8

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I found this in a website:
The Swastika Emblem of the Finnish AF 1918-45
It is important to understand that the swastika emblem of the early Finnish Air Force has nothing to do with the Nazi Germany. The swastika was the symbol of good fortune used by the Swedish Count Eric von Rosen who during the Finnish Civil War presented to the Finnish White Army its first aircraft on March 6th, 1918. The swastika was painted on the upper side and under side of the wings of the Thulin Parasol he brought from Sweden. The symbol was adopted by the Finnish Air Force to honor him.
semp
more edits: I gotta say that looking into the swastika, I was amazed and how widespread use it had during the past 5 or 6k years. I mean it was used just about in every continent as a good luck symbol. The things you learn when you are willing to spend 5 minutes on the internet. of course you gotta be able to tell the bs from the informative too.