About the 5$/20$ error, I don't believe that is an authentic one. The reason? This note was supposedly found in an ATM, with others 20$ notes. To have this note overprinted with a 5$ design (with both litho and engraved ones), you MUST have a complete sheet of printed 20$ notes slipped through the printing stages of 5$ notes, without any notice??
AND this overprinted sheet came back in the stack of sheets of 20$ and put on numbering printer, cutting and wrapping, to finally fall in an ATM, still with nobody have noted absolutely nothing??? The only possibility is a "back door job". And the employee risked (or lost) his/her job...
What about the reverse? to begin with the printing of 5$ notes? Very improbable too: you must have fed the printing machine set for 5$ with a sheet of paper (with the holographic stip, the water mark and the security tread on it) very characteristics of the 20$ notes, still without any notice? the litho and the engraved plates prints put on it (on only one side) the design of a 5$ note, and this sheet came back in the normal printing run of 20$...still with anybody finding anything wrong???
You must have very good arguments to convince me that it's NOT a forgery...:-/
