Print. Engraving, Praeclarissimus Isaacus Newton Eques, by G. Bickham, published by Robert Sayer, 8 May 1787. Depicting Isaac Newton in portrait bas-relief medallion format, bust profile to R, inset in geometric rays, centre of starry firmament with allegorical figures, putti, and assorted scientific instruments - scales, telescopes, dividers etc. Trimmed to 35 x 24 cm, image 34 x 23 cm. In frame 51x37.5x2.5cm.