Watch List notes:

GERMANY, Sachsen-Altenburg (Herzogtum). Friedrich Wilhelm III. 1669-1672. AR Groschen (23mm, 2.15 g, 12h). On His Death and Burial. + FRIED. WILH. IVN. D. G. DVX SAX · I · C · ET · MONT, seven-line legend citing birth, death, and burial / MEMEN/TO/MORI in three lines; skull-and-crossbones below; all within laurel wreath. Merseburger 4263, Kernbach 69.1. EF, lightly toned.

Ex Westfälische Auktionsgesellschaft 50 (10 February 2009), lot 2844.