Portrait print from engraving of Leonard Euler, 1804

print. engraving, stipple. LEONARD EULER. / J. Chapman Sculpt. London Published as the Act directs, Octr. 13th. 1804, by J. Wilkes. 1804 16x11cm. Portrait Leonhard Euler 1707-1783, mathematician, HS to L, in oval; below, predella with Euler seated dictating to emanuensis. John Chapman fl.1792-1823