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Security Features
Click here to access security feature information for the Series 2004 currency notes.
The Department of the Treasury's Bureau of Engraving and Printing (BEP) is responsible for producing the new series currency, which, like other United States currency, is issued through the Federal Reserve System. The new features found in the Series 1996 $20, $50 and $100 notes; and the 1999 Series $5 and $10 notes-- including an enlarged off-center portrait, watermark, fine-line printing patterns and color-shifting ink-- were selected after extensive testing and evaluation of approximately 120 bank note security devices, many of which are used successfully by other countries with lower production and circulation demands. Other pre-existing security features, such as the security thread and microprinting, are included in the new notes and have changed only slightly.
In December 1993, the National Research Council (NRC), funded by the Department of the Treasury, published Counterfeit Deterrent Features for the Next Generation Currency Design. This report analyzed and recommended overt counterfeit deterrent features that could be incorporated into a redesign of U.S. banknotes. The developmental costs for the 1996 Series currency notes were $265,376 to fund
the NRC study, and approximately $500,000 to purchase test quantities of features and carry out internal BEP analyses.
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Evaluation Criteria
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Effectiveness
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Counterfeit deterrent effectiveness was tested by
reprographic equipment manufacturers and government scientists. They
also considered the ease of public and cash handler recognition.
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Durability
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Durability was tested rigorously. Tests included
crumpling, folding, laundering, soiling and soaking in a variety of
solvents such as gasoline, acids and laundry products.
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Production Costs
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Research and production expenses will increase the cost of
each note by about two cents. The Federal Reserve System
has funded the development and introduction of the new
currency through earnings the Federal Reserve receives primarily
from interest on its holdings of U.S. government securities.
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Appearance
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The currency still has a familiar American look. The size of
the notes, basic colors, historical figures and national symbols
are not changing. New features were evaluated for
their compatibility with the traditional design of U.S. currency.
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Security Features Introduced in Series 1996 Notes
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Watermark
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area during the papermaking process. The image is visible as darker and
lighter areas when held up to the light. Since the watermark does not
copy on color copiers or scanners, it makes it harder to use lower
denomination paper to print counterfeit notes in higher denominations
and is a good way to authenticate the note. It depicts the same
historical figure as the engraved portrait.
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Color-Shifting Inks | These inks, used in the numeral on the lower right
corner of the face of the note, change color when the note is viewed
from different angles. The ink appears green when viewed directly and
changes to black when the note is tilted.
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Fine-Line Printing Patterns | This type of line structure appears normal to the human eye but is
difficult for current copying and scanning equipment to resolve
properly. The lines are found behind the portrait on the front and
around the historic building on the back.
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Enlarged Off-Center Portraits | The larger portrait can incorporate more detail, making it easier to
recognize and more difficult to counterfeit. It also provides an easy
way for the public to distinguish the new design from the old. The
portrait is shifted off center to provide room for a watermark and
unique "lanes" for the security thread in each denomination. The slight
relocation also reduces wear on most of the portrait by removing it from
the center, which is frequently folded. The increased image size can
help people with visual impairments identify the note.
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Low-Vision
Feature | A large
dark numeral on a light background on the lower right corner of the back. This numeral, which represents the denomination, helps people with low vision, senior
citizens and others as well because it is easier to read. This feature first appeared on the Series 1996 $20 note.
Also, a machine-readable feature has been incorporated for the blind. It will facilitate development of convenient scanning devices that could identify the denomination of the note.
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| Pre-1996 Series Security Features
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Security Thread | A security thread is a thin thread or ribbon running
through a bank note substrate. All 1990 series and later notes, except
the $1 and $2 notes, include this feature. The note’s denomination is printed on the
thread. In addition, the threads of the new $5, $10, $20 and $50 notes have
graphics in addition to the printed denomination. The denomination
number appears in the star field of the flag printed on the thread. The
thread in the new notes glows when held under a long-wave ultraviolet
light. In the new $5 it glows blue, in the new $10 it glows orange, in the new $20 note it glows green, in the new $50 note it glows
yellow, and in the new $100 note it glows red. Since it is visible in
transmitted light, but not in reflected light, the thread is difficult
to copy with a color copier which uses reflected light to generate an
image. Using a unique thread position for each denomination guards
against certain counterfeit techniques, such as bleaching ink off a
lower denomination and using the paper to "reprint" the bill as a higher
value note.
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Microprinting | This print appears as a thin line to the naked eye, but
the lettering easily can be read using a low-power magnifier.
The resolution of most current copiers is not sufficient to copy
such fine print. On the newly designed $5, microprinting can be found in the side borders and along the lower edge of the portrait's frame on the face of the note. On the new $10, microprinting appears in the numeral "10" in the lower left-hand corner and along the lower edge of the portrait's frame on the face of the note. On the Series 1996 $20 notes, microprinting appears in the lower left corner numeral and along the lower edge ornamentation of the oval framing the portrait. On the
$50 notes, microprinting appears on the side borders and in Ulysses Grant's collar. On the $100 notes, microprinting appears in the lower left corner numeral and on Benjamin Franklin's coat. In 1990, 1993 and 1995 series notes, "The United States of America" is printed repeatedly in a line outside the
portrait frame.
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