in which he says that it is a good likeness of the poet. He writes that "the graver had a strife / With nature to outdo the life" and that he has "hit his face" accurately. He adds that the engraver could not represent Shakespeare's "wit", for which the viewer will have to read the book. Because of this testimony to the accuracy of the portrait, commentators have used the Droeshout print as a standard by which to judge other portraits alleged to depict Shakespeare. As the 19th-century artist and writer Abraham Wivell put it, It is, as I may say, the key to unlock and detect almost all the impositions that have, at various times, arrested so much of public attention. It is a witness that can refute all false evidence, and will satisfy every discerner, how to appreciate, how to convict. In a similar vein, Tarnya Cooper, in 2006, writes that "it is the only portrait that definitely provides us with a reasonable idea of Shakespeare's appearance". Source image In addition to its use as a template to judge the authenticity of other images, scholars have also speculated about the original source used by Droeshout himself. The 19th-century scholar George Scharf argued on the basis of the inconsistencies in the lights and shadows that the original image would have been "either a limning or a crayon drawing". These typically used outlines rather than chiaroscuro modelling. He deduced that Droeshout had inexpertly attempted to add modelling shadows. Mary Edmond points out that Droeshout the Elder seems to have had an association with Marcus Gheeraerts the portraitist, and notes that there is evidence that a portrait of Shakespeare by Gheeraerts may have once existed. She surmises that Droeshout's engraving may have been derived from this lost portrait. Cooper argues that the poor drawing and modelling of the doublet and collar suggests that Droeshout was copying a lost drawing or painting that only depicted Shakespeare's head and shoulders. The body was added by the engraver himself, as was common practice. In the 19th century a painting that came to be known as the Flower portrait was discovered, inscribed with the date 1609 and painted on an authentic 17th-century panel. It was initially widely accepted as the original work from which Droeshout had copied his engraving, but in 1905 the art scholar Marion Spielmann demonstrated that the portrait corresponded to the second