As treasurer of the United States, Cabral advised the directors of the Bureau of Engraving and Printing, which prints US paper money, and the US Mint, which strikes US coins and medals. Her signature, along with that of the treasury secretary, appeared on Federal Reserve Notes issued during her tenure. All Series 2003A, 2004A, 2006 and 2006A notes bear her signature.
These signed labels create a unique collectible with a personal link to someone closely connected to the note. This is the first time PMG has offered signed certification labels. An affiliated company, NGC, offers a variety of popular, authentic hand-signed labels for coins.