to gray. 1969: The $10 bill began using the new treasury seal with wording in English that simply says, "The Department of the Treasury," instead of Latin "THESAUR. AMER. SEPTENT. SIGIL.," "Seal of the Treasury of North America." 1990: The first modern anti-counterfeiting measures were introduced with microscopic printing around Hamilton's portrait and a plastic security strip on the left side of the bill. May 24, 2000: To combat evolving counterfeiting , a new $10 bill was issued under series 1999 whose design was similar in style to the $100, $50, $20, and $5 bills that had all undergone previous design changes. The major changes were a revised portrait of Hamilton and a revised vignette of the U.S. Treasury building, now facing front. The plastic security strip reads "USA TEN" and now glows orange under a black light . The newest $10 bill entered circulation on March 2, 2006. In addition to design changes introduced in 2000, the obverse features red background images of the Statue of Liberty 's torch, the phrase WE THE PEOPLE from the United States Constitution , a smaller metallic representation of the Statue of Liberty's torch, orange and yellow background color, a borderless portrait of Hamilton, and to the left of Hamilton small yellow 10s whose zeros form the EURion constellation . The reverse features small yellow EURion 10s and have the fine lines removed from around the vignette of the United States Treasury building. These notes were issued in series 2004A with Cabral -