A very large framed Berlin plaque, late 19th centurySuperbly painted by Ehrhardt after Gerrit Dou, signed lower right, in an elaborate pierced giltwood foliate scrollwork frame, the plaque: 48.4cm by 40cm; the frame: 71cm by 61cm, impressed sceptre mark, KPM and numeral, incised '18 1/2 - 15 1/2', incised x注脚After the self-portrait of 1647 by Gerrit Dou, The Painter in his Workshop, in the Staatliche Kunstsammlungen Dresden, Gemäldegalerie Alte Meister.