The BEP states that every one inks applied on U.S. currency go through rigorous testing to make sure longevity and resilience. On top of that, the specialized cotton-linen paper Mix assists avoid bleeding. So be wary of any $50 bills where the vivid greens, blacks, and grays of the ink https://sociallweb.com/story4826067/the-fact-about-copyright-50-usd-bills-that-no-one-is-suggesting