GERMANY, Preußen (Kingdom). Friedrich Wilhelm. As Kronprinz, 1795-1840. Brass Rechenpfennig – Jeton (23mm, 2.95 g, 12h). By Iohann Jacob Lauer of Nürenburg, 1806-1852. Struck circa 1814-1835. Uniformed bust right / SPIEL MARKEN within wreath. Mitchiner, Jetons 2019/2021 (for obv./rev.). Choice EF.