As I sat with my computer thinking of a woman to properly research for this years national coin week, a few names bounced around in my head. Marie Curie- A scientist known for her work in radioactive elements, Emmy Noether- A mathematician and theoretical physicist, and Joan Clark- a mathematician and cryptanalyst known for her work with Alan Turing. As I tried to decide which one to pursue, I looked just a tad deeper into each  and when I looked into Joan Clark, I knew she was the one because not only was she a brilliant mathematician, but she was also a numismatist.