Hi I am always looking this website but one thing i can't understand what is the meaning of 2005 pre notes,somebody they were giving the add that they want to sell 2005 pre notes,somebody were telling we want to exchange,somebody want to buy,but what is the real thing,actual i want to know,so if some body knows then please explain me the details but not in short,i want clearly,some body they were giving add it will 20cr,so i need details,please explain properly,my e-mail address is vivaantripathy4646@gmail.com,09776444666