This was a twist on the original image of Felix that I made (I added a Iron Cross to his paw). It is not a replica of a real u-boat emblem. I do know that Felix, Betty Boop and other American Iconic images were well thought of by many in Europe at the time (mickey is another).
I washed out the black a bit to make it look weathered. Glad you like it!
I will try a few other variations (torps, etc) and other images/icons of the time too.
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