kanpur mudra mahotsava coin currency exhibition organized numismatic society attracted large number investors online auction held last day exhibition sunday numismatics other used hobby schoolchildren recreated alternative insurance boulevard designed endure economic crisis people keen interest exhibitions sanjeev agarwal president of the united states numismatic society told toi with child number sellers purchaser getting attracted towards rare coins whose worth multiplies passing year management students many colleges becoming bidders ensure best returns rare coins numismatic advisers city evaluate coins keep track international rates even give advice coins bought sold agarwal added naveen shah coin collector mumbai explained price gold strike rs denomination gone rs november rs april year lucrative option want make warm buck investment funds option fetch returns added raju bhai numismatic delhi said rare currency take note becoming rather good investment vikram roadside vendor daily income rs sold currency notes expo passionate currency notes since childhood neer thought passion become business day said uttam jaiswal jhansi purchased three rupee decks means rupees sold notes cost rs laxmi narain man unnao possesses coins period notes rupee denominations circulation numismatics earlier used hobby schoolchildren recreated alternative insurance avenue designed wear economic crisis people keen interest exposition