Howto search coins

Example how coins search can be used.
In case of search 'Russian Empire Nicholas II 1 ruble' it can be done in following way:
'ruble' is typed in search field - a lot of rubles are displayed.
then filter attributes are used to narrow the search result:



"Russian Emprire" is filtered.



"Nikolay II" is filtered.



"1" is filtered.

Few Nicholas II Rubles are displayed:




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