The old rouble in our picture comes from Emporium Hamburg in Germany where it sold in 2011 for 170 euros, about $220 US dollars. This gives you a good idea about the value of these nice old silver coins from Imperial Russia.
Here is how the catalogs value them including all dates and mint marks except as noted.
worn: $50 US dollars approximate catalog value
average circulated: $250
well preserved: $650
roubles dated 1810 are much more valuable; multiply these values by ten
roubles dated 1820 with a special mint mark are worth about five times these values (consult a coin catalog for detailed description).
Use our Important Terminology page to properly interpret these catalog values.