Very rare badge of Johannes Joseph Fürst von und zu Lichtenstein

Very rare badge of "Johannes Joseph Fürst von und zu Lichtenstein (1760 - 1836); material: tombac, pin works; Johann I - sixth child of Prince Franz Josef I - was Duke of Troppau and Jägerndorf and Austrian field marshal; from 1805 10th Prince von und zu Liechtenstein; the badge is bent on one side and was left as found (see photos); traces of use according to age; measurements: 2.3 x 4 cm