Message:

<p>[QUOTE=&quot;gatzdon, post: 339733, member: 8247&quot;]I found a 2006 publication from the National Research Council &quot;Is It Real? Identification and Assessment of hte Counterfeiting Threat for US Banknotes&quot;.&nbsp; </p><p><br /></p><p>On page 28, it states &quot;An example of a feature that is not readable in both directions is the infrared ink pattern, which is a set of stripes parallel to the short edge of the note.&quot;</p><p><br /></p><p>My guess is (and this is only speculation) is that the IR markings would run from edge to edge on the note.&nbsp; Given that this note shows some original looking ink at the top, I would speculate that that this error is note due to insufficient IR ink.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in