Germany - Russian Empire. Monogram on the shoulder strap or epaulette of an officer of the 8th hussar of tsar Nicholas II regiment (1st Westphalian regiment of Emperor Nicholas II of Russian). Very rare.
Until 1914, the Russian and German armies had twin regiments. The chiefs of the regiments were the "highest members of the Imperial family" of both dynasties.
The bronze silvered. Crown size 22*27,5mm, monogram 33*37mm.