This drawing was long considered to represent Charles VI. In reality, our drawing represents Frederick I of Prussia. Indeed, the saddle cloth displays the single-headed eagle with the FR monogram (for “Friedericus Rex”). Moreover, Friedrich is characterized by his very distinctive mustache. The current portrait can most likely be dated after his coronation in 1701, the year when images of the new king were disseminated throughout Europe. According to Mr. Telesko - whom we warmly thank - this drawing could have been made for a poster featuring the new king.