posted on Mar, 17 2004 @ 08:45 AM
SECURITY THREAD
The use of a unique thread position for each denomination guards against counterfeiting. In the $5 note, the thread is located to the left of the
Federal Reserve Seal and glows blue when held under ultraviolet light; in the $10 note, it is found to the left of the Federal Reserve Seal and glows
orange; in the $20 note, the thread is to the far left of the portrait and glows green; in the $50 note, it is found to the right of the portrait and
glows yellow; in the $100 note, it is found to the left of the portrait and glows red. The denomination of the note is also printed on each thread;
for example, "USA TWENTY" and a flag are repeated along the thread in the $20 note. The number "20" appears within the star field of the flag.