How much is a Selmer Clarinet serial number 0062760 worth?

It is possible that the clarinet you have might be a replica produced in China. Serial numbers for clarinets have no relation to the value of an instrument. Some of the features that contribute to the value of the clarinet are the model (e.g. Bundy / Series 9/Privilege/Recital/etc), the condition (e.g., has it ever been cracked, are the keys still functional), and the material used (e.g., plastic or wood).