Watch List notes:

George IV, The Royal Society Copley Medal, in gold, by J. S. Tanner, g. copley bart. dignissimo, Pallas seated holding wreath and a figure of Nature, named in exergue edwardus sabine armr mdcccxxi, rev. societas reg. londini, shield of the Royal Society with supporters, nullus in verba in exergue, 43mm. (D&W 160/546; Eimer 540; MI ii, 522/82), marked on the edge where held in a mount and burnished in the fields, nearly extremely fine and extremely rare.