Anachronisms abounded: the lipsticked girl with modern hairdo in the "Friar Tuck" episode, for instance; wine cups for each occupant at a table in "Checkmate", when that only became the practice hundreds of years later; the 20th century school implements in "Brother Battle"; the use of Guineas from the 1700's as coinage; written tavern signs when most people were illiterate; and a "bard" in "The Challenge" episode who sings a song to the late 17th-century tune of "Lillibullero" in 12th-century England. All this is typical of every series of historical fiction, but the show's producers pointed with pride to their accuracy, courtesy of hired consultants.