"The comments on mint engravers as banknote engravers didn't mention the most important one.

"The Mint's first engraver, Robert Scot, was a banknote - among many other things - engraver before he engraved coinage dies. He engraved notes for Virginia both before and after independence. He illustrated an encyclopedia and created gorgeous engraved maps, including one of the investments at the Battle of Yorktown. He is even believed to have engraved the original Seal of the United States of America.

"Despite all of that, he had no previous experience engraving coinage dies when he became the First Engraver in late 1793."

"The bitcoin isn't very mysterious and can be purchased from Frank Robinson for $2.99 I believe. The virtual version is $73,000 yesterday, but the actual version is more fun."

Kavan Ratnatunga passed along links to other places where these items can be purchased. Thanks. -Editor

Thanks, everyone. -Editor