The E-Sylum:  Volume 10, Number 49, December 2, 2007, Article 23

OLD PAPER MONEY AND COUNTERFEIT-DETECTING PENS

John Dannreuther writes: "I recently was asked the question
about the old bills (someone had started spending a hoard of
1950 twenties at a local restaurant). The cashier had used a
counterfeit-detecting pen on one of the bills and it registered
bad.

"I was there and looked at the second bill he had just taken
and told him it was genuine, and possibly the old paper did
not work with the pens. Guess that is the case, per last
week's E-Sylum. Does anyone know why?"

[This topic has come up before - basically, the pens are
designed to detect certain properties in genuine U.S. currency
paper, but they only work with relatively recent notes.  As
noted in one of the earlier E-Sylum articles, the counterfeit
pens come with a warning which says they don't work on money
older than 1959.  -Editor]

 MONEY NOT COUNTERFEIT - IT'S JUST OLD
 esylum_v10n48a23.html

 MARKING PEN LEADS TO CONFISCATION OF GENUINE CASH
 esylum_v08n53a11.html

 ANTI-COUNTERFEIT PEN SNAGS INNOCENT LAWYER AT HOOTERS
 esylum_v09n11a36.html

  Wayne Homren, Editor

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