The first artist to produce an "artist’s stamp" is open to interpretation. It did not take many years after the introduction of postage stamps before UK commercial photographers saw a market in personalised stamp photographs incorporating an individual's portrait within a stamp-like printed border, printed in perforated sheets with gummed backs. Fine artists were certainly commissioned to create poster stamps (advertising posters in collectible stamp form) from the late 1800s, but none appear to have worked with the format outside the commercial or advertising context.