Try to find the safety thread. A $one hundred bill printed soon after 1990 should have a safety thread within the left-hand facet that's only seen when you maintain the bill nearly the light. Authentic currency also has a little bit lifted ink that can be felt with the fingertips.[39] https://zbookmarkhub.com/story17171898/new-step-by-step-map-for-how-to-tell-if-bills-are-counterfeit