The $2 Franklin stamp (U.S. #523) pictures the Founding Father in black with a striking orange red frame. The stamp had been requested earlier, but was delayed while the Bureau of Engraving and Printing struggled to fulfill other projects brought about by World War I.
In November of 1920, the $2 Franklin stamp (U.S. #547) suddenly appeared with a carmine frame, causing quite a buzz among stamp collectors. Many thought they’d discovered a color error.
Postal officials denied the rumors. Upon investigation, they learned the original specifications had called for a carmine frame, and that the earlier orange red Franklin stamp (U.S. #523) was actually the error.