More on Counterfeit Detection By Biting
Regarding the old practice of biting a coin to see if it's counterfeit, Paul Bosco writes:

To watch the scene on YouTube, see:
Charlie Chaplin The Immigrant Eric Campbell waiter scene(/www.youtube.com/watch?v=Ll_dWJGJFXA)

Larry Gaye writes:

Fred Michaelson adds:

To read the earlier E-Sylum article, see:
COUNTERFEIT DETECTION BY BITING (www.coinbooks.org/esylum_v18n05a29.html)

Copper-Plated 1943 Steel Cents
Dave Lange writes:

To read the earlier E-Sylum article, see:
HEY KIDS, WANT TO COUNTERFEIT MONEY? (www.coinbooks.org/esylum_v18n05a30.html)

What is the Highest Value Currency Unit?
David Pickup writes: