You found a bunch of printed shares of a corporation whose shares are traded in Borsa stanbul at your fathers suitcase. Your father told you

You found a bunch of printed shares of a corporation whose shares are traded in Borsa İstanbul at your father’s suitcase. Your father told you that you can do whatever you like with those printed shares. You decided to sell the shares. You submitted the printed shares to the brokerage house (investment firm) and they told you that they cannot sell those printed shares. Are they correct, why? If not, why?