The iconic pyramid with an eye on top of it has been a long-standing source of speculation on the one dollar bill. It's a part of the United States' many traditions steeped in history and lore.

Trump claimed in an interview with Tucker Carlson last year that the U.S. "sold it under Jimmy Carter" for just "one dollar," labeling the transfer as a giveaway that undermined American interests.

There are few more instantly recognisable images than the United States’ one-dollar bill. But the note has undergone a number of changes since the introduction of paper currency in the ...