25 Roubles

Khorezm — the ancient oasis state centered on the lower Amu Darya — briefly existed as a nominally independent Soviet republic after Bolshevik forces ousted the Khan in 1920. It lasted only until 1923, when it was absorbed into the USSR. This coin was struck during that narrow window of theoretical sovereignty, and the two catalog varieties (Y#16.1 and Y#16.2) differ in die alignment, a detail consistent with the improvised minting conditions of a state that was effectively a Russian protectorate operating its own currency out of administrative necessity rather than genuine independence.