The cachet line, which began in 2008, was created for several reasons including to fill the void of philatelic covers depicting African Americans and Black Heritage, to educate collectors about Black stamp subjects or topics of interest, and to express Black culture in an atypical medium. The official first cachet was Charles Waddell Chesnutt whom cachet maker Don Neal wanted to depict in a way that was unique and in a way that would make the subject educational and collectible. 

In order to preserve the uniqueness and potential value of 6° Cachets, they are produced in limited quantities (typically no more than 25). The cachets are signed by Don Neal and sequentially numbered on the reverse of the envelope.