The Bank of Poland issued rouble-denominated banknotes (1, 3, 10 and 25 roubles) between 1841 and 1866. At the same time, the territory of Poland also used Russian state credit notes, which were accepted for all types of payments, unlike the Bank of Poland’s notes, which were legal tender only within Poland itself. Simultaneously, the Warsaw Mint produced three types of coins: coins with dual denominations (until 1850), billon złoty and groszy (until 1865), and Russian imperial-type coins marked with the mint name (until 1865). Thus, accounting in złoty and groszy, along with coins denominated in them, was maintained at least until 1865.
In 1866, monetary unification within the Russian Empire was carried out. The Bank of Poland ceased issuing its own notes, and only imperial-type banknotes were issued within the Kingdom of Poland.
