NOIR - AMBIGRAM
I few years ago I suddenly got the idea of making an ambigram with the french word "noir" - which means "black" - when I was sitting in a train to Zurich, Switzerland. After sketching it roughly on a piece of paper I digitalized it and did the finetuning. I was always amazed by ambigrams as you can read it from both sides, up and down. Here you can see it black on white.