We highlight one of his videos each week in The E-Sylum.
Here's one from 2009 with Steve Cox speaking about banknote security technology.
-Editor
The most rapidly developing area in numismatics today is the changing technology of the bank note system. Keeping currency a secure medium of exchange has always been important. See and handle various types of currency while learning how security techniques have evolved over the centuries to meet this challenge.
Speaker(s): Steve Cox. From the 2009 ANA convention.