Watch List notes:

FRANCE, Third Republic. Pierre & Marie Curie, physicists. 1859-1906 and 1867-1934. Æ Plaquette (45x60mm, 70.06 g). Paris mint. By Yencesse. Struck circa 1910. Jugate busts of Pierre and Marie in circle, with trefoils of leaves in margins; in exergue, PIERRE ET MARIE/ CURIE / Blank. Brown matte surfaces. EF.