When I was born a relative gave me a 1oz silver bar. It just says my birth year molded into the face and on the back says 1oz pure silver then says (.999%). I am assuming this is worth the current price of 1oz of silver, $18 and some change according to a quick google search. Is there any reason I should hold onto this thing. It seems strange hanging onto something thats only with $18 and thinking maybe it will be worth something one day.. Worth it to save 1oz of silver or should I just sell it and forget it??