Russian Czar Nicholas II Gold Roubles are very rare. The 10 Roubles are preferred over the 5 Roubles but both are scarce. They're also highly copied so make sure you buy PCGS or NGS graded coins or from a reputed dealer.
Russian 10 Ruble gold coins are very beautiful and they'll extremely scarce. For some years (like 1911) only 50,000 were minted!
